linux-kernel - [PATCH] arm64: dts: qcom: ipq9574: Enable eMMC variant

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Message-Id: <20260102104638.3802715-1-varadarajan.narayanan@oss.qualcomm.com>
Date: Fri,  2 Jan 2026 16:16:38 +0530
From: Varadarajan Narayanan <varadarajan.narayanan@....qualcomm.com>
To: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: sumit.garg@...nel.org,
        Varadarajan Narayanan <varadarajan.narayanan@....qualcomm.com>
Subject: [PATCH] arm64: dts: qcom: ipq9574: Enable eMMC variant

RDP433 can have NAND or eMMC based on a board level rework. Since the
same GPIOS are used for both the interfaces, only one of them can be
used. Add a new DTS file to disable NAND and enable eMMC.

Signed-off-by: Varadarajan Narayanan <varadarajan.narayanan@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile             |  2 +-
 .../boot/dts/qcom/ipq9574-rdp-common.dtsi     | 32 +++++++++++++++++++
 .../boot/dts/qcom/ipq9574-rdp433-emmc.dts     | 26 +++++++++++++++
 3 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/qcom/ipq9574-rdp433-emmc.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 6f34d5ed331c..d5fe12ef4300 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -26,7 +26,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk01.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp418.dtb
-dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp433.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp433.dtb ipq9574-rdp433-emmc.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp449.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp453.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp454.dtb
diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi b/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
index bdb396afb992..e4ae79b2fcd9 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
@@ -169,6 +169,38 @@ data-pins {
 			bias-disable;
 		};
 	};
+
+	sdc_default_state: sdc-default-state {
+		clk-pins {
+			pins = "gpio5";
+			function = "sdc_clk";
+			drive-strength = <8>;
+			bias-disable;
+		};
+
+		cmd-pins {
+			pins = "gpio4";
+			function = "sdc_cmd";
+			drive-strength = <8>;
+			bias-pull-up;
+		};
+
+		data-pins {
+			pins = "gpio0", "gpio1", "gpio2",
+			       "gpio3", "gpio6", "gpio7",
+			       "gpio8", "gpio9";
+			function = "sdc_data";
+			drive-strength = <8>;
+			bias-pull-up;
+		};
+
+		rclk-pins {
+			pins = "gpio10";
+			function = "sdc_rclk";
+			drive-strength = <8>;
+			bias-pull-down;
+		};
+	};
 };
 
 &qpic_bam {
diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433-emmc.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433-emmc.dts
new file mode 100644
index 000000000000..ffd96b1b1c65
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433-emmc.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * IPQ9574 RDP433 eMMC board variant device tree source
+ *
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+/dts-v1/;
+
+#include "ipq9574-rdp433.dts"
+
+&qpic_nand {
+	status = "disabled";
+};
+
+&sdhc_1 {
+	pinctrl-0 = <&sdc_default_state>;
+	pinctrl-names = "default";
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+	max-frequency = <384000000>;
+	bus-width = <8>;
+	status = "okay";
+};
-- 
2.34.1