arm64: dts: ti: k3-am62-lp-sk: Enable internal pulls for MMC0 data pins

AM62 LP SK board does not have external pullups on MMC0 DAT1-DAT7
pins [0]. Enable internal pullups on DAT1-DAT7 considering:
- without a host-side pullup, these lines rely solely on the eMMC
  device's internal pullup (R_int, 10-150K per JEDEC), which may
  exceed the recommended 50K max for 1.8V VCCQ
- JEDEC JESD84-B51 Table 200 requires host-side pullups (R_DAT,
  10K-100K) on all data lines to prevent bus floating

[0] https://www.ti.com/lit/zip/SPRR471

Fixes: a0b8da04153e ("arm64: dts: ti: k3-am62*: Move eMMC pinmux to top level board file")
Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Moteen Shah <m-shah@ti.com>
Link: https://patch.msgid.link/20260223233731.2690472-4-jm@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts b/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts
index 3e2d8f669535132a7dee8705c294abb5f6f59d9f..8a556fbbe08b7bd9f8283254b132517160e28462 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62-lp-sk.dts
@@ -88,13 +88,13 @@
                        AM62X_IOPAD(0x220, PIN_INPUT, 0) /* (V3) MMC0_CMD */
                        AM62X_IOPAD(0x218, PIN_INPUT, 0) /* (Y1) MMC0_CLK */
                        AM62X_IOPAD(0x214, PIN_INPUT, 0) /* (V2) MMC0_DAT0 */
-                       AM62X_IOPAD(0x210, PIN_INPUT, 0) /* (V1) MMC0_DAT1 */
-                       AM62X_IOPAD(0x20c, PIN_INPUT, 0) /* (W2) MMC0_DAT2 */
-                       AM62X_IOPAD(0x208, PIN_INPUT, 0) /* (W1) MMC0_DAT3 */
-                       AM62X_IOPAD(0x204, PIN_INPUT, 0) /* (Y2) MMC0_DAT4 */
-                       AM62X_IOPAD(0x200, PIN_INPUT, 0) /* (W3) MMC0_DAT5 */
-                       AM62X_IOPAD(0x1fc, PIN_INPUT, 0) /* (W4) MMC0_DAT6 */
-                       AM62X_IOPAD(0x1f8, PIN_INPUT, 0) /* (V4) MMC0_DAT7 */
+                       AM62X_IOPAD(0x210, PIN_INPUT_PULLUP, 0) /* (V1) MMC0_DAT1 */
+                       AM62X_IOPAD(0x20c, PIN_INPUT_PULLUP, 0) /* (W2) MMC0_DAT2 */
+                       AM62X_IOPAD(0x208, PIN_INPUT_PULLUP, 0) /* (W1) MMC0_DAT3 */
+                       AM62X_IOPAD(0x204, PIN_INPUT_PULLUP, 0) /* (Y2) MMC0_DAT4 */
+                       AM62X_IOPAD(0x200, PIN_INPUT_PULLUP, 0) /* (W3) MMC0_DAT5 */
+                       AM62X_IOPAD(0x1fc, PIN_INPUT_PULLUP, 0) /* (W4) MMC0_DAT6 */
+                       AM62X_IOPAD(0x1f8, PIN_INPUT_PULLUP, 0) /* (V4) MMC0_DAT7 */
                >;
        };