FROMLIST: arm64: dts: qcom: lemans-evk: Add SDHCI support for eMMC via overlay

Enable the SDHCI controller for eMMC functionality on the lemans EVK
using a device tree overlay. Configure the corresponding addresse space
and resources for eMMC.

Signed-off-by: Monish Chunara <monish.chunara@oss.qualcomm.com>

Author: mchunara007

arch/arm64/boot/dts/qcom/Makefile

@@ -34,6 +34,9 @@ dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp454.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= kaanapali-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk.dtb
 
+lemans-evk-emmc-dtbs := lemans-evk.dtb lemans-evk-emmc.dtbo
+dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-emmc.dtb
+
 lemans-evk-sd-card-dtbs := lemans-evk.dtb lemans-evk-sd-card.dtbo
 dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-sd-card.dtb
 

arch/arm64/boot/dts/qcom/lemans-evk-emmc.dtso

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/qcom,rpmh.h>
+#include <dt-bindings/clock/qcom,sa8775p-gcc.h>
+
+/ {
+	vmmc_sdc1: regulator-l8c {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg-sdc1";
+
+		regulator-min-microvolt = <2960000>;
+		regulator-max-microvolt = <2960000>;
+	};
+
+	vqmmc_sdc1: regulator-s4a {
+		compatible = "regulator-fixed";
+		regulator-name = "vqmmc-sdc1";
+
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+};
+
+&sdhc {
+	vmmc-supply = <&vmmc_sdc1>;
+	vqmmc-supply = <&vqmmc_sdc1>;
+
+	pinctrl-0 = <&sdc_default>, <&sdc_rclk>;
+	pinctrl-1 = <&sdc_sleep>, <&sdc_rclk_sleep>;
+
+	pinctrl-names = "default", "sleep";
+
+	supports-cqe;
+	non-removable;
+
+	qcom,dll-config = <0x000F64EC>;
+	max-frequency = <50000000>;
+
+	bus-width = <8>;
+	no-sd;
+	no-sdio;
+
+	status = "okay";
+};
+
+&tlmm {
+        sdc_rclk: sdc1-rclk-state {
+                pins = "sdc1_rclk";
+                bias-pull-down;
+        };
+
+        sdc_rclk_sleep: sdc1-rclk-sleep-state {
+                pins = "sdc1_rclk";
+                drive-strength = <2>;
+                bias-bus-hold;
+        };
+};

arch/arm64/boot/dts/qcom/lemans.dtsi

@@ -3875,17 +3875,21 @@
 
 		sdhc: mmc@87c4000 {
 			compatible = "qcom,sa8775p-sdhci", "qcom,sdhci-msm-v5";
-			reg = <0x0 0x087c4000 0x0 0x1000>;
+			reg = <0x0 0x87C4000 0x0 0x1000>,
+			      <0x0 0x87C5000 0x0 0x1000>;
+			reg-names = "hc", "cqhci";
 
 			interrupts = <GIC_SPI 383 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 521 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-names = "hc_irq",
 					  "pwr_irq";
 
 			clocks = <&gcc GCC_SDCC1_AHB_CLK>,
-				 <&gcc GCC_SDCC1_APPS_CLK>;
+				<&gcc GCC_SDCC1_APPS_CLK>,
+				<&rpmhcc RPMH_CXO_CLK>;
 			clock-names = "iface",
-				      "core";
+				      "core",
+				      "xo";
 
 			interconnects = <&aggre1_noc MASTER_SDC QCOM_ICC_TAG_ALWAYS
 					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,