arm64: dts: qcom: sa8155p-adp: fix SDHC2 CD pin configuration

There are two issues with SDHC2 configuration for SA8155P-ADP,
which prevent use of SDHC2 and causes issues with ethernet:

- Card Detect pin for SHDC2 on SA8155P-ADP is connected to gpio4 of
  PMM8155AU_1, not to SoC itself. SoC's gpio4 is used for DWMAC
  TX. If sdhc driver probes after dwmac driver, it reconfigures
  gpio4 and this breaks Ethernet MAC.

- pinctrl configuration mentions gpio96 as CD pin. It seems it was
  copied from some SM8150 example, because as mentioned above,
  correct CD pin is gpio4 on PMM8155AU_1.

This patch fixes both mentioned issues by providing correct pin handle
and pinctrl configuration.

Fixes: 0deb262 ("arm64: dts: qcom: sa8155p-adp: Add support for uSD card")
Cc: [email protected]
Signed-off-by: Volodymyr Babchuk <[email protected]>
Reviewed-by: Stephan Gerhold <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

arch/arm64/boot/dts/qcom/sa8155p-adp.dts

@@ -367,6 +367,16 @@
 	};
 };
 
+&pmm8155au_1_gpios {
+	pmm8155au_1_sdc2_cd: sdc2-cd-default-state {
+		pins = "gpio4";
+		function = "normal";
+		input-enable;
+		bias-pull-up;
+		power-source = <0>;
+	};
+};
+
 &qupv3_id_1 {
 	status = "okay";
 };
@@ -384,10 +394,10 @@
 &sdhc_2 {
 	status = "okay";
 
-	cd-gpios = <&tlmm 4 GPIO_ACTIVE_LOW>;
+	cd-gpios = <&pmm8155au_1_gpios 4 GPIO_ACTIVE_LOW>;
 	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&sdc2_on>;
-	pinctrl-1 = <&sdc2_off>;
+	pinctrl-0 = <&sdc2_on &pmm8155au_1_sdc2_cd>;
+	pinctrl-1 = <&sdc2_off &pmm8155au_1_sdc2_cd>;
 	vqmmc-supply = <&vreg_l13c_2p96>; /* IO line power */
 	vmmc-supply = <&vreg_l17a_2p96>;  /* Card power line */
 	bus-width = <4>;
@@ -505,13 +515,6 @@
 			bias-pull-up;		/* pull up */
 			drive-strength = <16>;	/* 16 MA */
 		};
-
-		sd-cd-pins {
-			pins = "gpio96";
-			function = "gpio";
-			bias-pull-up;		/* pull up */
-			drive-strength = <2>;	/* 2 MA */
-		};
 	};
 
 	sdc2_off: sdc2-off-state {
@@ -532,13 +535,6 @@
 			bias-pull-up;		/* pull up */
 			drive-strength = <2>;	/* 2 MA */
 		};
-
-		sd-cd-pins {
-			pins = "gpio96";
-			function = "gpio";
-			bias-pull-up;		/* pull up */
-			drive-strength = <2>;	/* 2 MA */
-		};
 	};
 
 	usb2phy_ac_en1_default: usb2phy-ac-en1-default-state {