[PATCH v2 1/3] arm64: dts: ti: k3-am62p5-sk: Disable MMC1 internal pulls on data pins

[Judith Mendez]

AM62P SK has external 10K 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 (~8.33K) drops below the 10K minimum pullup requirement
  for data lines (per SD Physical Layer Specification)
- removing internal pullups makes DAT1-3 match DAT0 10K
  external pullup so its consistent and within spec
- both internal and external pullups enabled equals unnecessary power
  consumption

Fixes: c00504ea42c0 ("arm64: dts: ti: k3-am62p5-sk: Updates for SK EVM")
[0] https://www.ti.com/lit/zip/SPRR487
Signed-off-by: Judith Mendez <jm at ti.com>
Reviewed-by: Moteen Shah <m-shah at ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index 4f7f6f95b02ef..35baa777b9121 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -271,9 +271,9 @@ main_mmc1_pins_default: main-mmc1-default-pins {
 			AM62PX_IOPAD(0x023c, PIN_INPUT, 0) /* (H20) MMC1_CMD */
 			AM62PX_IOPAD(0x0234, PIN_OUTPUT, 0) /* (J24) MMC1_CLK */
 			AM62PX_IOPAD(0x0230, PIN_INPUT, 0) /* (H21) MMC1_DAT0 */
-			AM62PX_IOPAD(0x022c, PIN_INPUT_PULLUP, 0) /* (H23) MMC1_DAT1 */
-			AM62PX_IOPAD(0x0228, PIN_INPUT_PULLUP, 0) /* (H22) MMC1_DAT2 */
-			AM62PX_IOPAD(0x0224, PIN_INPUT_PULLUP, 0) /* (H25) MMC1_DAT3 */
+			AM62PX_IOPAD(0x022c, PIN_INPUT, 0) /* (H23) MMC1_DAT1 */
+			AM62PX_IOPAD(0x0228, PIN_INPUT, 0) /* (H22) MMC1_DAT2 */
+			AM62PX_IOPAD(0x0224, PIN_INPUT, 0) /* (H25) MMC1_DAT3 */
 			AM62PX_IOPAD(0x0240, PIN_INPUT, 0) /* (D23) MMC1_SDCD */
 		>;
 		bootph-all;
-- 
2.52.0