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arm64: dts: ti: k3-am654-base-board: Add support for SD card

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With silicon revision 2.0, add support for SD card on the am65x-evm.
Boards with silicon revision 1.0 are susceptible to interface issues
because of erratas i2025 and i2026[1] and are recommended to disable
this node.

[1] Am654x Silicon Revision 1.0 errata: https://www.ti.com/lit/pdf/sprz452

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
This commit is contained in:
Faiz Abbas 2020-07-11 00:32:15 +05:30 committed by Tero Kristo
parent d7600d070f
commit 13f74fc647
1 changed files with 25 additions and 0 deletions
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25
arch/arm64/boot/dts/ti/k3-am654-base-board.dts
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@ -167,6 +167,19 @@ AM65X_IOPAD(0x01b0, PIN_INPUT, 0) /* (C25) MMC0_DS */
>;
};
main_mmc1_pins_default: main_mmc1_pins_default {
pinctrl-single,pins = <
AM65X_IOPAD(0x02d4, PIN_INPUT_PULLDOWN, 0) /* (C27) MMC1_CLK */
AM65X_IOPAD(0x02d8, PIN_INPUT_PULLUP, 0) /* (C28) MMC1_CMD */
AM65X_IOPAD(0x02d0, PIN_INPUT_PULLUP, 0) /* (D28) MMC1_DAT0 */
AM65X_IOPAD(0x02cc, PIN_INPUT_PULLUP, 0) /* (E27) MMC1_DAT1 */
AM65X_IOPAD(0x02c8, PIN_INPUT_PULLUP, 0) /* (D26) MMC1_DAT2 */
AM65X_IOPAD(0x02c4, PIN_INPUT_PULLUP, 0) /* (D27) MMC1_DAT3 */
AM65X_IOPAD(0x02dc, PIN_INPUT_PULLUP, 0) /* (B24) MMC1_SDCD */
AM65X_IOPAD(0x02e0, PIN_INPUT, 0) /* (C24) MMC1_SDWP */
>;
};
usb1_pins_default: usb1_pins_default {
pinctrl-single,pins = <
AM65X_IOPAD(0x02c0, PIN_OUTPUT, 0) /* (AC8) USB1_DRVVBUS */
@ -300,6 +313,18 @@ &sdhci0 {
disable-wp;
};
/*
* Because of erratas i2025 and i2026 for silicon revision 1.0, the
* SD card interface might fail. Boards with sr1.0 are recommended to
* disable sdhci1
*/
&sdhci1 {
pinctrl-names = "default";
pinctrl-0 = <&main_mmc1_pins_default>;
ti,driver-strength-ohm = <50>;
disable-wp;
};
&dwc3_1 {
status = "okay";
};