[PATCH v2 2/3] arm64: dts: ti: k3-am62l-evm: Disable MMC1 internal pulls on data pins

[Judith Mendez]

AM62L EVM has external 47K pullups on MMC1 DAT1-DAT3 pins [0].
Disable internal pullups on DAT1-DAT3 so that each line has a
single pullup source:
- with both pullups enabled, the effective parallel resistance on
  DAT1-3 (~24.2K) creates a ~2x mismatch vs DAT0 (47K external
  only). Removing internal pullups results in DAT1-3 matching DAT0 at 47K
- 47K external alone is within the recommended range for 1.8V
  signaling (10K min, 50K recommended max)
- both internal and external pullups enabled equals unnecessary power
  consumption

Fixes: 00fb4c73b67d ("arm64: dts: ti: k3-am62l: add initial reference board file")
[0] https://www.ti.com/lit/zip/SPRCAL6
Signed-off-by: Judith Mendez <jm at ti.com>
Reviewed-by: Moteen Shah <m-shah at ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62l3-evm.dts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
index cae04cce33736..bd876c68aa347 100644
--- a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
@@ -272,9 +272,9 @@ mmc1_pins_default: mmc1-default-pins {
 			AM62LX_IOPAD(0x0230, PIN_INPUT, 0) /* (Y3) MMC1_CMD */
 			AM62LX_IOPAD(0x0228, PIN_OUTPUT, 0) /* (Y2) MMC1_CLK */
 			AM62LX_IOPAD(0x0224, PIN_INPUT, 0) /* (AA1) MMC1_DAT0 */
-			AM62LX_IOPAD(0x0220, PIN_INPUT_PULLUP, 0) /* (Y4) MMC1_DAT1 */
-			AM62LX_IOPAD(0x021c, PIN_INPUT_PULLUP, 0) /* (AA2) MMC1_DAT2 */
-			AM62LX_IOPAD(0x0218, PIN_INPUT_PULLUP, 0) /* (AB2) MMC1_DAT3 */
+			AM62LX_IOPAD(0x0220, PIN_INPUT, 0) /* (Y4) MMC1_DAT1 */
+			AM62LX_IOPAD(0x021c, PIN_INPUT, 0) /* (AA2) MMC1_DAT2 */
+			AM62LX_IOPAD(0x0218, PIN_INPUT, 0) /* (AB2) MMC1_DAT3 */
 			AM62LX_IOPAD(0x0234, PIN_INPUT, 0) /* (B6) MMC1_SDCD */
 		>;
 		bootph-all;
-- 
2.52.0