arm64: dts: ti: am62-verdin: Enable pullup for eMMC data pins

Verdin AM62 board does not have external pullups on eMMC DAT1-DAT7 pins.
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, 10kohm-150kohm per JEDEC), which may
   exceed the recommended 50kohm max for 1.8V VCCQ
 - JEDEC JESD84-B51 Table 200 requires host-side pullups (R_DAT,
   10kohm-100kohm) on all data lines to prevent bus floating

Fixes: 316b80246b16 ("arm64: dts: ti: add verdin am62")
Cc: stable@vger.kernel.org
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260320073032.10427-1-francesco@dolcini.it
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
index 2a7242a2fef878b25c83874e930e4c8e0da0be5f..09840a3b9fe75e3a5bab87882da7e72e0f6c977c 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
@@ -572,16 +572,16 @@
        /* On-module eMMC */
        pinctrl_sdhci0: main-mmc0-default-pins {
                pinctrl-single,pins = <
-                       AM62X_IOPAD(0x220, PIN_INPUT, 0) /*  (Y3) MMC0_CMD  */
-                       AM62X_IOPAD(0x218, PIN_INPUT, 0) /* (AB1) MMC0_CLK  */
-                       AM62X_IOPAD(0x214, PIN_INPUT, 0) /* (AA2) MMC0_DAT0 */
-                       AM62X_IOPAD(0x210, PIN_INPUT, 0) /* (AA1) MMC0_DAT1 */
-                       AM62X_IOPAD(0x20c, PIN_INPUT, 0) /* (AA3) MMC0_DAT2 */
-                       AM62X_IOPAD(0x208, PIN_INPUT, 0) /*  (Y4) MMC0_DAT3 */
-                       AM62X_IOPAD(0x204, PIN_INPUT, 0) /* (AB2) MMC0_DAT4 */
-                       AM62X_IOPAD(0x200, PIN_INPUT, 0) /* (AC1) MMC0_DAT5 */
-                       AM62X_IOPAD(0x1fc, PIN_INPUT, 0) /* (AD2) MMC0_DAT6 */
-                       AM62X_IOPAD(0x1f8, PIN_INPUT, 0) /* (AC2) MMC0_DAT7 */
+                       AM62X_IOPAD(0x220, PIN_INPUT,        0) /*  (Y3) MMC0_CMD  */
+                       AM62X_IOPAD(0x218, PIN_INPUT,        0) /* (AB1) MMC0_CLK  */
+                       AM62X_IOPAD(0x214, PIN_INPUT,        0) /* (AA2) MMC0_DAT0 */
+                       AM62X_IOPAD(0x210, PIN_INPUT_PULLUP, 0) /* (AA1) MMC0_DAT1 */
+                       AM62X_IOPAD(0x20c, PIN_INPUT_PULLUP, 0) /* (AA3) MMC0_DAT2 */
+                       AM62X_IOPAD(0x208, PIN_INPUT_PULLUP, 0) /*  (Y4) MMC0_DAT3 */
+                       AM62X_IOPAD(0x204, PIN_INPUT_PULLUP, 0) /* (AB2) MMC0_DAT4 */
+                       AM62X_IOPAD(0x200, PIN_INPUT_PULLUP, 0) /* (AC1) MMC0_DAT5 */
+                       AM62X_IOPAD(0x1fc, PIN_INPUT_PULLUP, 0) /* (AD2) MMC0_DAT6 */
+                       AM62X_IOPAD(0x1f8, PIN_INPUT_PULLUP, 0) /* (AC2) MMC0_DAT7 */
                >;
        };