linux-kernel - [PATCH 15/23] arm64: zynqmp: Add pinctrl emmc description to SM-K26

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Date:   Tue, 2 May 2023 15:35:43 +0200
From:   Michal Simek <michal.simek@....com>
To:     <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
        <michal.simek@...inx.com>, <git@...inx.com>
CC:     Amit Kumar Mahapatra <amit.kumar-mahapatra@...inx.com>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Parth Gajjar <parth.gajjar@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Srinivas Neeli <srinivas.neeli@...inx.com>,
        Vishal Sagar <vishal.sagar@....com>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 15/23] arm64: zynqmp: Add pinctrl emmc description to SM-K26

Production SOM has emmc on it and make sense to describe pin description to
be able use EMMC if it is not configured via psu_init.
(Still some regs are not handled but this is one step in that direction)

Signed-off-by: Michal Simek <michal.simek@....com>
---

 .../boot/dts/xilinx/zynqmp-sm-k26-revA.dts    | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
index c206021cccf7..e284979fd7b1 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
@@ -14,6 +14,7 @@
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/phy/phy.h>
+#include <dt-bindings/pinctrl/pinctrl-zynqmp.h>
 
 / {
 	model = "ZynqMP SM-K26 Rev1/B/A";
@@ -85,6 +86,23 @@ &uart1 { /* MIO36/MIO37 */
 	status = "okay";
 };
 
+&pinctrl0 {
+	status = "okay";
+	pinctrl_sdhci0_default: sdhci0-default {
+		conf {
+			groups = "sdio0_0_grp";
+			slew-rate = <SLEW_RATE_SLOW>;
+			power-source = <IO_STANDARD_LVCMOS18>;
+			bias-disable;
+		};
+
+		mux {
+			groups = "sdio0_0_grp";
+			function = "sdio0";
+		};
+	};
+};
+
 &qspi { /* MIO 0-5 - U143 */
 	status = "okay";
 	spi_flash: flash@0 { /* MT25QU512A */
@@ -189,6 +207,8 @@ partition@...0000 {
 
 &sdhci0 { /* MIO13-23 - 16GB emmc MTFC16GAPALBH-IT - U133A */
 	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sdhci0_default>;
 	non-removable;
 	disable-wp;
 	bus-width = <8>;
-- 
2.36.1