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powerpc/82xx: Add CPM USB Gadget support for MPC8272ADS boards

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- Add usb node;
- Configure pins and clocks;
- Enable USB function in BCSR.

The support was successfully tested using serial and ethernet gadget
drivers.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Anton Vorontsov 2009-08-19 03:28:17 +04:00 committed by Kumar Gala
parent a70e88bc78
commit 818fcac554
2 changed files with 22 additions and 0 deletions
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8
arch/powerpc/boot/dts/mpc8272ads.dts
View File

@ -173,6 +173,14 @@ scc4: serial@11a60 {
fsl,cpm-command = <0xce00000>;
};
usb@11b60 {
compatible = "fsl,mpc8272-cpm-usb";
reg = <0x11b60 0x40 0x8b00 0x100>;
interrupts = <11 8>;
interrupt-parent = <&PIC>;
mode = "peripheral";
};
mdio@10d40 {
device_type = "mdio";
compatible = "fsl,mpc8272ads-mdio-bitbang",

14
arch/powerpc/platforms/82xx/mpc8272_ads.c
View File

@ -99,6 +99,15 @@ static struct cpm_pin mpc8272_ads_pins[] = {
/* I2C */
{3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},
{3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},
/* USB */
{2, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{2, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
};
static void __init init_ioports(void)
@ -112,6 +121,8 @@ static void __init init_ioports(void)
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_TX);
cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_TX);
cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK11, CPM_CLK_RX);
@ -147,6 +158,7 @@ static void __init mpc8272_ads_setup_arch(void)
#define BCSR1_FETH_RST 0x04000000
#define BCSR1_RS232_EN1 0x02000000
#define BCSR1_RS232_EN2 0x01000000
#define BCSR3_USB_nEN 0x80000000
#define BCSR3_FETHIEN2 0x10000000
#define BCSR3_FETH2_RST 0x08000000
@ -156,6 +168,8 @@ static void __init mpc8272_ads_setup_arch(void)
clrbits32(&bcsr[3], BCSR3_FETHIEN2);
setbits32(&bcsr[3], BCSR3_FETH2_RST);
clrbits32(&bcsr[3], BCSR3_USB_nEN);
iounmap(bcsr);
init_ioports();