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Code Pull Requests Activity

Merge branches 'clk-allwinner', 'clk-rockchip', 'clk-tegra', 'clk-berlin' and 'clk-qcom-mmagic' into clk-next

Browse Source 
* clk-allwinner:
  clk: sunxi-ng: r40: export a regmap to access the GMAC register
  clk: sunxi-ng: r40: rewrite init code to a platform driver
  clk: sunxi-ng: add support for H6 PRCM CCU

* clk-rockchip:
  clk: rockchip: remove deprecated gate-clk code and dt-binding
  clk: rockchip: use match_string() helper

* clk-tegra:
  clk: tegra: Add quirk for getting CDEV1/2 clocks on Tegra20
  clk: tegra20: Correct parents of CDEV1/2 clocks
  clk: tegra20: Add DEV1/DEV2 OSC dividers

* clk-berlin:
  clk: berlin: switch to SPDX license identifier

* clk-qcom-mmagic:
  clk: qcom: mmcc-msm8996: leave all mmagic gdscs and clocks always enabled
  clk: qcom: Register the gdscs before the clocks
  clk: qcom: gdsc: Add support for ALWAYS_ON gdscs
This commit is contained in:
Stephen Boyd 2018-06-04 12:27:44 -07:00
commit 45ba387511
33 changed files with 442 additions and 347 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
Documentation/devicetree/bindings/clock/rockchip.txt
View File

@ -1,77 +0,0 @@
Device Tree Clock bindings for arch-rockchip
This binding uses the common clock binding[1].
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
== Gate clocks ==
These bindings are deprecated!
Please use the soc specific CRU bindings instead.
The gate registers form a continuos block which makes the dt node
structure a matter of taste, as either all gates can be put into
one gate clock spanning all registers or they can be divided into
the 10 individual gates containing 16 clocks each.
The code supports both approaches.
Required properties:
- compatible : "rockchip,rk2928-gate-clk"
- reg : shall be the control register address(es) for the clock.
- #clock-cells : from common clock binding; shall be set to 1
- clock-output-names : the corresponding gate names that the clock controls
- clocks : should contain the parent clock for each individual gate,
therefore the number of clocks elements should match the number of
clock-output-names
Example using multiple gate clocks:
clk_gates0: gate-clk@200000d0 {
compatible = "rockchip,rk2928-gate-clk";
reg = <0x200000d0 0x4>;
clocks = <&dummy>, <&dummy>,
<&dummy>, <&dummy>,
<&dummy>, <&dummy>,
<&dummy>, <&dummy>,
<&dummy>, <&dummy>,
<&dummy>, <&dummy>,
<&dummy>, <&dummy>,
<&dummy>, <&dummy>;
clock-output-names =
"gate_core_periph", "gate_cpu_gpll",
"gate_ddrphy", "gate_aclk_cpu",
"gate_hclk_cpu", "gate_pclk_cpu",
"gate_atclk_cpu", "gate_i2s0",
"gate_i2s0_frac", "gate_i2s1",
"gate_i2s1_frac", "gate_i2s2",
"gate_i2s2_frac", "gate_spdif",
"gate_spdif_frac", "gate_testclk";
#clock-cells = <1>;
};
clk_gates1: gate-clk@200000d4 {
compatible = "rockchip,rk2928-gate-clk";
reg = <0x200000d4 0x4>;
clocks = <&xin24m>, <&xin24m>,
<&xin24m>, <&dummy>,
<&dummy>, <&xin24m>,
<&xin24m>, <&dummy>,
<&xin24m>, <&dummy>,
<&xin24m>, <&dummy>,
<&xin24m>, <&dummy>,
<&xin24m>, <&dummy>;
clock-output-names =
"gate_timer0", "gate_timer1",
"gate_timer2", "gate_jtag",
"gate_aclk_lcdc1_src", "gate_otgphy0",
"gate_otgphy1", "gate_ddr_gpll",
"gate_uart0", "gate_frac_uart0",
"gate_uart1", "gate_frac_uart1",
"gate_uart2", "gate_frac_uart2",
"gate_uart3", "gate_frac_uart3";
#clock-cells = <1>;
};

3
Documentation/devicetree/bindings/clock/sunxi-ccu.txt
View File

@ -21,6 +21,7 @@ Required properties :
- "allwinner,sun50i-a64-r-ccu"
- "allwinner,sun50i-h5-ccu"
- "allwinner,sun50i-h6-ccu"
- "allwinner,sun50i-h6-r-ccu"
- "nextthing,gr8-ccu"
- reg: Must contain the registers base address and length
@ -35,7 +36,7 @@ Required properties :
For the main CCU on H6, one more clock is needed:
- "iosc": the SoC's internal frequency oscillator
For the PRCM CCUs on A83T/H3/A64, two more clocks are needed:
For the PRCM CCUs on A83T/H3/A64/H6, two more clocks are needed:
- "pll-periph": the SoC's peripheral PLL from the main CCU
- "iosc": the SoC's internal frequency oscillator

13
drivers/clk/berlin/berlin2-avpll.c
View File

@ -1,20 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk-provider.h>
#include <linux/io.h>

13
drivers/clk/berlin/berlin2-avpll.h
View File

@ -1,20 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __BERLIN2_AVPLL_H
#define __BERLIN2_AVPLL_H

13
drivers/clk/berlin/berlin2-div.c
View File

@ -1,20 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/bitops.h>
#include <linux/clk-provider.h>

13
drivers/clk/berlin/berlin2-div.h
View File

@ -1,20 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __BERLIN2_DIV_H
#define __BERLIN2_DIV_H

13
drivers/clk/berlin/berlin2-pll.c
View File

@ -1,20 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk-provider.h>
#include <linux/io.h>

13
drivers/clk/berlin/berlin2-pll.h
View File

@ -1,20 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __BERLIN2_PLL_H
#define __BERLIN2_PLL_H

13
drivers/clk/berlin/bg2.c
View File

@ -1,20 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>

13
drivers/clk/berlin/bg2q.c
View File

@ -1,20 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>

13
drivers/clk/berlin/common.h
View File

@ -1,20 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2014 Marvell Technology Group Ltd.
*
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
* Alexandre Belloni <alexandre.belloni@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __BERLIN2_COMMON_H
#define __BERLIN2_COMMON_H

32
drivers/clk/qcom/common.c
View File

@ -228,22 +228,6 @@ int qcom_cc_really_probe(struct platform_device *pdev,
if (!cc)
return -ENOMEM;
cc->rclks = rclks;
cc->num_rclks = num_clks;
for (i = 0; i < num_clks; i++) {
if (!rclks[i])
continue;
ret = devm_clk_register_regmap(dev, rclks[i]);
if (ret)
return ret;
}
ret = devm_of_clk_add_hw_provider(dev, qcom_cc_clk_hw_get, cc);
if (ret)
return ret;
reset = &cc->reset;
reset->rcdev.of_node = dev->of_node;
reset->rcdev.ops = &qcom_reset_ops;
@ -272,6 +256,22 @@ int qcom_cc_really_probe(struct platform_device *pdev,
return ret;
}
cc->rclks = rclks;
cc->num_rclks = num_clks;
for (i = 0; i < num_clks; i++) {
if (!rclks[i])
continue;
ret = devm_clk_register_regmap(dev, rclks[i]);
if (ret)
return ret;
}
ret = devm_of_clk_add_hw_provider(dev, qcom_cc_clk_hw_get, cc);
if (ret)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(qcom_cc_really_probe);

2
drivers/clk/qcom/gcc-msm8996.c
View File

@ -3105,7 +3105,7 @@ static struct gdsc aggre0_noc_gdsc = {
.name = "aggre0_noc",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = VOTABLE,
.flags = VOTABLE | ALWAYS_ON,
};
static struct gdsc hlos1_vote_aggre0_noc_gdsc = {

8
drivers/clk/qcom/gdsc.c
View File

@ -291,6 +291,14 @@ static int gdsc_init(struct gdsc *sc)
if ((sc->flags & VOTABLE) && on)
gdsc_enable(&sc->pd);
/* If ALWAYS_ON GDSCs are not ON, turn them ON */
if (sc->flags & ALWAYS_ON) {
if (!on)
gdsc_enable(&sc->pd);
on = true;
sc->pd.flags |= GENPD_FLAG_ALWAYS_ON;
}
if (on || (sc->pwrsts & PWRSTS_RET))
gdsc_force_mem_on(sc);
else

1
drivers/clk/qcom/gdsc.h
View File

@ -53,6 +53,7 @@ struct gdsc {
#define VOTABLE BIT(0)
#define CLAMP_IO BIT(1)
#define HW_CTRL BIT(2)
#define ALWAYS_ON BIT(3)
struct reset_controller_dev *rcdev;
unsigned int *resets;
unsigned int reset_count;

22
drivers/clk/qcom/mmcc-msm8996.c
View File

@ -1245,7 +1245,7 @@ static struct clk_branch mmss_mmagic_ahb_clk = {
.name = "mmss_mmagic_ahb_clk",
.parent_names = (const char *[]){ "ahb_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1260,7 +1260,7 @@ static struct clk_branch mmss_mmagic_cfg_ahb_clk = {
.name = "mmss_mmagic_cfg_ahb_clk",
.parent_names = (const char *[]){ "ahb_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1319,7 +1319,7 @@ static struct clk_branch mmagic_camss_axi_clk = {
.name = "mmagic_camss_axi_clk",
.parent_names = (const char *[]){ "axi_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1334,7 +1334,7 @@ static struct clk_branch mmagic_camss_noc_cfg_ahb_clk = {
.name = "mmagic_camss_noc_cfg_ahb_clk",
.parent_names = (const char *[]){ "gcc_mmss_noc_cfg_ahb_clk" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1439,7 +1439,7 @@ static struct clk_branch mmagic_mdss_axi_clk = {
.name = "mmagic_mdss_axi_clk",
.parent_names = (const char *[]){ "axi_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1454,7 +1454,7 @@ static struct clk_branch mmagic_mdss_noc_cfg_ahb_clk = {
.name = "mmagic_mdss_noc_cfg_ahb_clk",
.parent_names = (const char *[]){ "gcc_mmss_noc_cfg_ahb_clk" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1529,7 +1529,7 @@ static struct clk_branch mmagic_video_axi_clk = {
.name = "mmagic_video_axi_clk",
.parent_names = (const char *[]){ "axi_clk_src" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -1544,7 +1544,7 @@ static struct clk_branch mmagic_video_noc_cfg_ahb_clk = {
.name = "mmagic_video_noc_cfg_ahb_clk",
.parent_names = (const char *[]){ "gcc_mmss_noc_cfg_ahb_clk" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
.ops = &clk_branch2_ops,
},
},
@ -2919,7 +2919,7 @@ static struct gdsc mmagic_video_gdsc = {
.name = "mmagic_video",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = VOTABLE,
.flags = VOTABLE | ALWAYS_ON,
};
static struct gdsc mmagic_mdss_gdsc = {
@ -2929,7 +2929,7 @@ static struct gdsc mmagic_mdss_gdsc = {
.name = "mmagic_mdss",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = VOTABLE,
.flags = VOTABLE | ALWAYS_ON,
};
static struct gdsc mmagic_camss_gdsc = {
@ -2939,7 +2939,7 @@ static struct gdsc mmagic_camss_gdsc = {
.name = "mmagic_camss",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = VOTABLE,
.flags = VOTABLE | ALWAYS_ON,
};
static struct gdsc venus_gdsc = {

1
drivers/clk/rockchip/Makefile
View File

@ -3,7 +3,6 @@
# Rockchip Clock specific Makefile
#
obj-y += clk-rockchip.o
obj-y += clk.o
obj-y += clk-pll.o
obj-y += clk-cpu.o

98
drivers/clk/rockchip/clk-rockchip.c
View File

@ -1,98 +0,0 @@
/*
* Copyright (c) 2013 MundoReader S.L.
* Author: Heiko Stuebner <heiko@sntech.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/of.h>
#include <linux/of_address.h>
static DEFINE_SPINLOCK(clk_lock);
/*
* Gate clocks
*/
static void __init rk2928_gate_clk_init(struct device_node *node)
{
struct clk_onecell_data *clk_data;
const char *clk_parent;
const char *clk_name;
void __iomem *reg;
void __iomem *reg_idx;
int flags;
int qty;
int reg_bit;
int clkflags = CLK_SET_RATE_PARENT;
int i;
qty = of_property_count_strings(node, "clock-output-names");
if (qty < 0) {
pr_err("%s: error in clock-output-names %d\n", __func__, qty);
return;
}
if (qty == 0) {
pr_info("%s: nothing to do\n", __func__);
return;
}
reg = of_iomap(node, 0);
if (!reg)
return;
clk_data = kzalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
if (!clk_data) {
iounmap(reg);
return;
}
clk_data->clks = kzalloc(qty * sizeof(struct clk *), GFP_KERNEL);
if (!clk_data->clks) {
kfree(clk_data);
iounmap(reg);
return;
}
flags = CLK_GATE_HIWORD_MASK | CLK_GATE_SET_TO_DISABLE;
for (i = 0; i < qty; i++) {
of_property_read_string_index(node, "clock-output-names",
i, &clk_name);
/* ignore empty slots */
if (!strcmp("reserved", clk_name))
continue;
clk_parent = of_clk_get_parent_name(node, i);
/* keep all gates untouched for now */
clkflags |= CLK_IGNORE_UNUSED;
reg_idx = reg + (4 * (i / 16));
reg_bit = (i % 16);
clk_data->clks[i] = clk_register_gate(NULL, clk_name,
clk_parent, clkflags,
reg_idx, reg_bit,
flags,
&clk_lock);
WARN_ON(IS_ERR(clk_data->clks[i]));
}
clk_data->clk_num = qty;
of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
}
CLK_OF_DECLARE(rk2928_gate, "rockchip,rk2928-gate-clk", rk2928_gate_clk_init);

16
drivers/clk/rockchip/clk.c
View File

@ -274,18 +274,10 @@ static struct clk *rockchip_clk_register_frac_branch(
struct clk_mux *frac_mux = &frac->mux;
struct clk_init_data init;
struct clk *mux_clk;
int i, ret;
frac->mux_frac_idx = -1;
for (i = 0; i < child->num_parents; i++) {
if (!strcmp(name, child->parent_names[i])) {
pr_debug("%s: found fractional parent in mux at pos %d\n",
__func__, i);
frac->mux_frac_idx = i;
break;
}
}
int ret;
frac->mux_frac_idx = match_string(child->parent_names,
child->num_parents, name);
frac->mux_ops = &clk_mux_ops;
frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb;
@ -312,6 +304,8 @@ static struct clk *rockchip_clk_register_frac_branch(
/* notifier on the fraction divider to catch rate changes */
if (frac->mux_frac_idx >= 0) {
pr_debug("%s: found fractional parent in mux at pos %d\n",
__func__, frac->mux_frac_idx);
ret = clk_notifier_register(clk, &frac->clk_nb);
if (ret)
pr_err("%s: failed to register clock notifier for %s\n",

5
drivers/clk/sunxi-ng/Kconfig
View File

@ -16,6 +16,11 @@ config SUN50I_H6_CCU
default ARM64 && ARCH_SUNXI
depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
config SUN50I_H6_R_CCU
bool "Support for the Allwinner H6 PRCM CCU"
default ARM64 && ARCH_SUNXI
depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
config SUN4I_A10_CCU
bool "Support for the Allwinner A10/A20 CCU"
default MACH_SUN4I

1
drivers/clk/sunxi-ng/Makefile
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@ -23,6 +23,7 @@ lib-$(CONFIG_SUNXI_CCU) += ccu_mp.o
# SoC support
obj-$(CONFIG_SUN50I_A64_CCU) += ccu-sun50i-a64.o
obj-$(CONFIG_SUN50I_H6_CCU) += ccu-sun50i-h6.o
obj-$(CONFIG_SUN50I_H6_R_CCU) += ccu-sun50i-h6-r.o
obj-$(CONFIG_SUN4I_A10_CCU) += ccu-sun4i-a10.o
obj-$(CONFIG_SUN5I_CCU) += ccu-sun5i.o
obj-$(CONFIG_SUN6I_A31_CCU) += ccu-sun6i-a31.o

207
drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c Normal file
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@ -0,0 +1,207 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.xyz>
*/
#include <linux/clk-provider.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include "ccu_common.h"
#include "ccu_reset.h"
#include "ccu_div.h"
#include "ccu_gate.h"
#include "ccu_mp.h"
#include "ccu_nm.h"
#include "ccu-sun50i-h6-r.h"
/*
* Information about AR100 and AHB/APB clocks in R_CCU are gathered from
* clock definitions in the BSP source code.
*/
static const char * const ar100_r_apb2_parents[] = { "osc24M", "osc32k",
"pll-periph0", "iosc" };
static const struct ccu_mux_var_prediv ar100_r_apb2_predivs[] = {
{ .index = 2, .shift = 0, .width = 5 },
};
static struct ccu_div ar100_clk = {
.div = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
.mux = {
.shift = 24,
.width = 2,
.var_predivs = ar100_r_apb2_predivs,
.n_var_predivs = ARRAY_SIZE(ar100_r_apb2_predivs),
},
.common = {
.reg = 0x000,
.features = CCU_FEATURE_VARIABLE_PREDIV,
.hw.init = CLK_HW_INIT_PARENTS("ar100",
ar100_r_apb2_parents,
&ccu_div_ops,
0),
},
};
static CLK_FIXED_FACTOR(r_ahb_clk, "r-ahb", "ar100", 1, 1, 0);
static struct ccu_div r_apb1_clk = {
.div = _SUNXI_CCU_DIV(0, 2),
.common = {
.reg = 0x00c,
.hw.init = CLK_HW_INIT("r-apb1",
"r-ahb",
&ccu_div_ops,
0),
},
};
static struct ccu_div r_apb2_clk = {
.div = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
.mux = {
.shift = 24,
.width = 2,
.var_predivs = ar100_r_apb2_predivs,
.n_var_predivs = ARRAY_SIZE(ar100_r_apb2_predivs),
},
.common = {
.reg = 0x010,
.features = CCU_FEATURE_VARIABLE_PREDIV,
.hw.init = CLK_HW_INIT_PARENTS("r-apb2",
ar100_r_apb2_parents,
&ccu_div_ops,
0),
},
};
/*
* Information about the gate/resets are gathered from the clock header file
* in the BSP source code, although most of them are unused. The existence
* of the hardware block is verified with "3.1 Memory Mapping" chapter in
* "Allwinner H6 V200 User Manual V1.1"; and the parent APB buses are verified
* with "3.3.2.1 System Bus Tree" chapter inthe same document.
*/
static SUNXI_CCU_GATE(r_apb1_timer_clk, "r-apb1-timer", "r-apb1",
0x11c, BIT(0), 0);
static SUNXI_CCU_GATE(r_apb1_twd_clk, "r-apb1-twd", "r-apb1",
0x12c, BIT(0), 0);
static SUNXI_CCU_GATE(r_apb1_pwm_clk, "r-apb1-pwm", "r-apb1",
0x13c, BIT(0), 0);
static SUNXI_CCU_GATE(r_apb2_uart_clk, "r-apb2-uart", "r-apb2",
0x18c, BIT(0), 0);
static SUNXI_CCU_GATE(r_apb2_i2c_clk, "r-apb2-i2c", "r-apb2",
0x19c, BIT(0), 0);
static SUNXI_CCU_GATE(r_apb1_ir_clk, "r-apb1-ir", "r-apb1",
0x1cc, BIT(0), 0);
static SUNXI_CCU_GATE(r_apb1_w1_clk, "r-apb1-w1", "r-apb1",
0x1cc, BIT(0), 0);
/* Information of IR(RX) mod clock is gathered from BSP source code */
static const char * const r_mod0_default_parents[] = { "osc32k", "osc24M" };
static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir",
r_mod0_default_parents, 0x1c0,
0, 5, /* M */
8, 2, /* P */
24, 1, /* mux */
BIT(31), /* gate */
0);
/*
* BSP didn't use the 1-wire function at all now, and the information about
* this mod clock is guessed from the IR mod clock above. The existence of
* this mod clock is proven by BSP clock header, and the dividers are verified
* by contents in the 1-wire related chapter of the User Manual.
*/
static SUNXI_CCU_MP_WITH_MUX_GATE(w1_clk, "w1",
r_mod0_default_parents, 0x1e0,
0, 5, /* M */
8, 2, /* P */
24, 1, /* mux */
BIT(31), /* gate */
0);
static struct ccu_common *sun50i_h6_r_ccu_clks[] = {
&ar100_clk.common,
&r_apb1_clk.common,
&r_apb2_clk.common,
&r_apb1_timer_clk.common,
&r_apb1_twd_clk.common,
&r_apb1_pwm_clk.common,
&r_apb2_uart_clk.common,
&r_apb2_i2c_clk.common,
&r_apb1_ir_clk.common,
&r_apb1_w1_clk.common,
&ir_clk.common,
&w1_clk.common,
};
static struct clk_hw_onecell_data sun50i_h6_r_hw_clks = {
.hws = {
[CLK_AR100] = &ar100_clk.common.hw,
[CLK_R_AHB] = &r_ahb_clk.hw,
[CLK_R_APB1] = &r_apb1_clk.common.hw,
[CLK_R_APB2] = &r_apb2_clk.common.hw,
[CLK_R_APB1_TIMER] = &r_apb1_timer_clk.common.hw,
[CLK_R_APB1_TWD] = &r_apb1_twd_clk.common.hw,
[CLK_R_APB1_PWM] = &r_apb1_pwm_clk.common.hw,
[CLK_R_APB2_UART] = &r_apb2_uart_clk.common.hw,
[CLK_R_APB2_I2C] = &r_apb2_i2c_clk.common.hw,
[CLK_R_APB1_IR] = &r_apb1_ir_clk.common.hw,
[CLK_R_APB1_W1] = &r_apb1_w1_clk.common.hw,
[CLK_IR] = &ir_clk.common.hw,
[CLK_W1] = &w1_clk.common.hw,
},
.num = CLK_NUMBER,
};
static struct ccu_reset_map sun50i_h6_r_ccu_resets[] = {
[RST_R_APB1_TIMER] = { 0x11c, BIT(16) },
[RST_R_APB1_TWD] = { 0x12c, BIT(16) },
[RST_R_APB1_PWM] = { 0x13c, BIT(16) },
[RST_R_APB2_UART] = { 0x18c, BIT(16) },
[RST_R_APB2_I2C] = { 0x19c, BIT(16) },
[RST_R_APB1_IR] = { 0x1cc, BIT(16) },
[RST_R_APB1_W1] = { 0x1ec, BIT(16) },
};
static const struct sunxi_ccu_desc sun50i_h6_r_ccu_desc = {
.ccu_clks = sun50i_h6_r_ccu_clks,
.num_ccu_clks = ARRAY_SIZE(sun50i_h6_r_ccu_clks),
.hw_clks = &sun50i_h6_r_hw_clks,
.resets = sun50i_h6_r_ccu_resets,
.num_resets = ARRAY_SIZE(sun50i_h6_r_ccu_resets),
};
static void __init sunxi_r_ccu_init(struct device_node *node,
const struct sunxi_ccu_desc *desc)
{
void __iomem *reg;
reg = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(reg)) {
pr_err("%pOF: Could not map the clock registers\n", node);
return;
}
sunxi_ccu_probe(node, reg, desc);
}
static void __init sun50i_h6_r_ccu_setup(struct device_node *node)
{
sunxi_r_ccu_init(node, &sun50i_h6_r_ccu_desc);
}
CLK_OF_DECLARE(sun50i_h6_r_ccu, "allwinner,sun50i-h6-r-ccu",
sun50i_h6_r_ccu_setup);

19
drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h Normal file
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@ -0,0 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2017 Icenowy Zheng <icenowy@aosc.xyz>
*/
#ifndef _CCU_SUN50I_H6_R_H
#define _CCU_SUN50I_H6_R_H
#include <dt-bindings/clock/sun50i-h6-r-ccu.h>
#include <dt-bindings/reset/sun50i-h6-r-ccu.h>
/* AHB/APB bus clocks are not exported except APB1 for R_PIO */
#define CLK_R_AHB 1
#define CLK_R_APB2 3
#define CLK_NUMBER (CLK_W1 + 1)
#endif /* _CCU_SUN50I_H6_R_H */

72
drivers/clk/sunxi-ng/ccu-sun8i-r40.c
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@ -12,7 +12,8 @@
*/
#include <linux/clk-provider.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include "ccu_common.h"
#include "ccu_reset.h"
@ -1250,17 +1251,45 @@ static struct ccu_mux_nb sun8i_r40_cpu_nb = {
.bypass_index = 1, /* index of 24 MHz oscillator */
};
static void __init sun8i_r40_ccu_setup(struct device_node *node)
/*
* Add a regmap for the GMAC driver (dwmac-sun8i) to access the
* GMAC configuration register.
* Only this register is allowed to be written, in order to
* prevent overriding critical clock configuration.
*/
#define SUN8I_R40_GMAC_CFG_REG 0x164
static bool sun8i_r40_ccu_regmap_accessible_reg(struct device *dev,
unsigned int reg)
{
if (reg == SUN8I_R40_GMAC_CFG_REG)
return true;
return false;
}
static struct regmap_config sun8i_r40_ccu_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = 0x320, /* PLL_LOCK_CTRL_REG */
/* other devices have no business accessing other registers */
.readable_reg = sun8i_r40_ccu_regmap_accessible_reg,
.writeable_reg = sun8i_r40_ccu_regmap_accessible_reg,
};
static int sun8i_r40_ccu_probe(struct platform_device *pdev)
{
struct resource *res;
struct regmap *regmap;
void __iomem *reg;
u32 val;
int ret;
reg = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(reg)) {
pr_err("%s: Could not map the clock registers\n",
of_node_full_name(node));
return;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
reg = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(reg))
return PTR_ERR(reg);
/* Force the PLL-Audio-1x divider to 4 */
val = readl(reg + SUN8I_R40_PLL_AUDIO_REG);
@ -1277,7 +1306,14 @@ static void __init sun8i_r40_ccu_setup(struct device_node *node)
val &= ~GENMASK(25, 20);
writel(val, reg + SUN8I_R40_USB_CLK_REG);
sunxi_ccu_probe(node, reg, &sun8i_r40_ccu_desc);
regmap = devm_regmap_init_mmio(&pdev->dev, reg,
&sun8i_r40_ccu_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
ret = sunxi_ccu_probe(pdev->dev.of_node, reg, &sun8i_r40_ccu_desc);
if (ret)
return ret;
/* Gate then ungate PLL CPU after any rate changes */
ccu_pll_notifier_register(&sun8i_r40_pll_cpu_nb);
@ -1285,6 +1321,20 @@ static void __init sun8i_r40_ccu_setup(struct device_node *node)
/* Reparent CPU during PLL CPU rate changes */
ccu_mux_notifier_register(pll_cpu_clk.common.hw.clk,
&sun8i_r40_cpu_nb);
return 0;
}
CLK_OF_DECLARE(sun8i_r40_ccu, "allwinner,sun8i-r40-ccu",
sun8i_r40_ccu_setup);
static const struct of_device_id sun8i_r40_ccu_ids[] = {
{ .compatible = "allwinner,sun8i-r40-ccu" },
{ }
};
static struct platform_driver sun8i_r40_ccu_driver = {
.probe = sun8i_r40_ccu_probe,
.driver = {
.name = "sun8i-r40-ccu",
.of_match_table = sun8i_r40_ccu_ids,
},
};
builtin_platform_driver(sun8i_r40_ccu_driver);

2
drivers/clk/tegra/clk-tegra114.c
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@ -1367,7 +1367,7 @@ static void __init tegra114_clock_init(struct device_node *np)
tegra_super_clk_gen4_init(clk_base, pmc_base, tegra114_clks,
&pll_x_params);
tegra_add_of_provider(np);
tegra_add_of_provider(np, of_clk_src_onecell_get);
tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
tegra_clk_apply_init_table = tegra114_clock_apply_init_table;

2
drivers/clk/tegra/clk-tegra124.c
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@ -1479,7 +1479,7 @@ static void __init tegra124_132_clock_init_post(struct device_node *np)
&pll_x_params);
tegra_init_special_resets(1, tegra124_reset_assert,
tegra124_reset_deassert);
tegra_add_of_provider(np);
tegra_add_of_provider(np, of_clk_src_onecell_get);
clks[TEGRA124_CLK_EMC] = tegra_clk_register_emc(clk_base, np,
&emc_lock);

52
drivers/clk/tegra/clk-tegra20.c
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@ -26,6 +26,8 @@
#include "clk.h"
#include "clk-id.h"
#define MISC_CLK_ENB 0x48
#define OSC_CTRL 0x50
#define OSC_CTRL_OSC_FREQ_MASK (3<<30)
#define OSC_CTRL_OSC_FREQ_13MHZ (0<<30)
@ -831,15 +833,25 @@ static void __init tegra20_periph_clk_init(void)
periph_clk_enb_refcnt);
clks[TEGRA20_CLK_PEX] = clk;
/* dev1 OSC divider */
clk_register_divider(NULL, "dev1_osc_div", "clk_m",
0, clk_base + MISC_CLK_ENB, 22, 2,
CLK_DIVIDER_POWER_OF_TWO | CLK_DIVIDER_READ_ONLY,
NULL);
/* dev2 OSC divider */
clk_register_divider(NULL, "dev2_osc_div", "clk_m",
0, clk_base + MISC_CLK_ENB, 20, 2,
CLK_DIVIDER_POWER_OF_TWO | CLK_DIVIDER_READ_ONLY,
NULL);
/* cdev1 */
clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, 0, 26000000);
clk = tegra_clk_register_periph_gate("cdev1", "cdev1_fixed", 0,
clk = tegra_clk_register_periph_gate("cdev1", "cdev1_mux", 0,
clk_base, 0, 94, periph_clk_enb_refcnt);
clks[TEGRA20_CLK_CDEV1] = clk;
/* cdev2 */
clk = clk_register_fixed_rate(NULL, "cdev2_fixed", NULL, 0, 26000000);
clk = tegra_clk_register_periph_gate("cdev2", "cdev2_fixed", 0,
clk = tegra_clk_register_periph_gate("cdev2", "cdev2_mux", 0,
clk_base, 0, 93, periph_clk_enb_refcnt);
clks[TEGRA20_CLK_CDEV2] = clk;
@ -1077,6 +1089,36 @@ static const struct of_device_id pmc_match[] __initconst = {
{ },
};
static struct clk *tegra20_clk_src_onecell_get(struct of_phandle_args *clkspec,
void *data)
{
struct clk_hw *parent_hw;
struct clk_hw *hw;
struct clk *clk;
clk = of_clk_src_onecell_get(clkspec, data);
if (IS_ERR(clk))
return clk;
/*
* Tegra20 CDEV1 and CDEV2 clocks are a bit special case, their parent
* clock is created by the pinctrl driver. It is possible for clk user
* to request these clocks before pinctrl driver got probed and hence
* user will get an orphaned clock. That might be undesirable because
* user may expect parent clock to be enabled by the child.
*/
if (clkspec->args[0] == TEGRA20_CLK_CDEV1 ||
clkspec->args[0] == TEGRA20_CLK_CDEV2) {
hw = __clk_get_hw(clk);
parent_hw = clk_hw_get_parent(hw);
if (!parent_hw)
return ERR_PTR(-EPROBE_DEFER);
}
return clk;
}
static void __init tegra20_clock_init(struct device_node *np)
{
struct device_node *node;
@ -1115,7 +1157,7 @@ static void __init tegra20_clock_init(struct device_node *np)
tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA20_CLK_CLK_MAX);
tegra_add_of_provider(np);
tegra_add_of_provider(np, tegra20_clk_src_onecell_get);
tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
tegra_clk_apply_init_table = tegra20_clock_apply_init_table;

2
drivers/clk/tegra/clk-tegra210.c
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@ -3567,7 +3567,7 @@ static void __init tegra210_clock_init(struct device_node *np)
tegra_init_special_resets(2, tegra210_reset_assert,
tegra210_reset_deassert);
tegra_add_of_provider(np);
tegra_add_of_provider(np, of_clk_src_onecell_get);
tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
tegra210_mbist_clk_init();

2
drivers/clk/tegra/clk-tegra30.c
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@ -1349,7 +1349,7 @@ static void __init tegra30_clock_init(struct device_node *np)
tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA30_CLK_CLK_MAX);
tegra_add_of_provider(np);
tegra_add_of_provider(np, of_clk_src_onecell_get);
tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
tegra_clk_apply_init_table = tegra30_clock_apply_init_table;

5
drivers/clk/tegra/clk.c
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@ -298,7 +298,8 @@ static struct reset_controller_dev rst_ctlr = {
.of_reset_n_cells = 1,
};
void __init tegra_add_of_provider(struct device_node *np)
void __init tegra_add_of_provider(struct device_node *np,
void *clk_src_onecell_get)
{
int i;
@ -314,7 +315,7 @@ void __init tegra_add_of_provider(struct device_node *np)
clk_data.clks = clks;
clk_data.clk_num = clk_num;
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
of_clk_add_provider(np, clk_src_onecell_get, &clk_data);
rst_ctlr.of_node = np;
rst_ctlr.nr_resets = periph_banks * 32 + num_special_reset;

2
drivers/clk/tegra/clk.h
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@ -763,7 +763,7 @@ struct clk **tegra_clk_init(void __iomem *clk_base, int num, int periph_banks);
struct clk **tegra_lookup_dt_id(int clk_id, struct tegra_clk *tegra_clk);
void tegra_add_of_provider(struct device_node *np);
void tegra_add_of_provider(struct device_node *np, void *clk_src_onecell_get);
void tegra_register_devclks(struct tegra_devclk *dev_clks, int num);
void tegra_audio_clk_init(void __iomem *clk_base,

24
include/dt-bindings/clock/sun50i-h6-r-ccu.h Normal file
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@ -0,0 +1,24 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.xyz>
*/
#ifndef _DT_BINDINGS_CLK_SUN50I_H6_R_CCU_H_
#define _DT_BINDINGS_CLK_SUN50I_H6_R_CCU_H_
#define CLK_AR100 0
#define CLK_R_APB1 2
#define CLK_R_APB1_TIMER 4
#define CLK_R_APB1_TWD 5
#define CLK_R_APB1_PWM 6
#define CLK_R_APB2_UART 7
#define CLK_R_APB2_I2C 8
#define CLK_R_APB1_IR 9
#define CLK_R_APB1_W1 10
#define CLK_IR 11
#define CLK_W1 12
#endif /* _DT_BINDINGS_CLK_SUN50I_H6_R_CCU_H_ */

17
include/dt-bindings/reset/sun50i-h6-r-ccu.h Normal file
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@ -0,0 +1,17 @@
/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */
/*
* Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.xyz>
*/
#ifndef _DT_BINDINGS_RST_SUN50I_H6_R_CCU_H_
#define _DT_BINDINGS_RST_SUN50I_H6_R_CCU_H_
#define RST_R_APB1_TIMER 0
#define RST_R_APB1_TWD 1
#define RST_R_APB1_PWM 2
#define RST_R_APB2_UART 3
#define RST_R_APB2_I2C 4
#define RST_R_APB1_IR 5
#define RST_R_APB1_W1 6
#endif /* _DT_BINDINGS_RST_SUN50I_H6_R_CCU_H_ */