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| author |   Faiz Abbas <faiz_abbas@ti.com> | 2020-07-11 00:32:15 +0530 |
|---|---|---|
| committer |   Tero Kristo <t-kristo@ti.com> | 2020-07-17 10:21:57 +0300 |
| commit | 13f74fc647f4a521699d00c463bb31b208815cef (patch) | |
| tree | 7dafeefc2194bf730cb30303f8655e9c6526691c /arch/arm64/boot/dts/ti/k3-am654-base-board.dts | |
| parent | arm64: dts: ti: k3-am65-main: Add support for sdhci1 (diff) | |
| download | linux-dev-13f74fc647f4a521699d00c463bb31b208815cef.tar.xz linux-dev-13f74fc647f4a521699d00c463bb31b208815cef.zip | |
arm64: dts: ti: k3-am654-base-board: Add support for SD card
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>
Diffstat (limited to 'arch/arm64/boot/dts/ti/k3-am654-base-board.dts')
| -rw-r--r-- | arch/arm64/boot/dts/ti/k3-am654-base-board.dts | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts index 2f3d3316a1cf..b40153b4b400 100644 --- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts +++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts @@ -167,6 +167,19 @@ >; }; + 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 @@ 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"; }; |