linux-kernel - [PATCH 8/9] arm64: dts: qcom: ipq5424: Remove eMMC support

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Message-ID: <20250918094017.3844338-9-quic_mdalam@quicinc.com>
Date: Thu, 18 Sep 2025 15:10:16 +0530
From: Md Sadre Alam <quic_mdalam@...cinc.com>
To: <broonie@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <andersson@...nel.org>,
        <konradybcio@...nel.org>, <vkoul@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-spi@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <dmaengine@...r.kernel.org>
CC: <quic_varada@...cinc.com>, <quic_mdalam@...cinc.com>
Subject: [PATCH 8/9] arm64: dts: qcom: ipq5424: Remove eMMC support

Remove eMMC support from the IPQ5424 RDP466 board configuration to
resolve GPIO pin conflicts with SPI NAND interface.

The IPQ5424 RDP466 board is designed with NOR + NAND as the default boot
mode configuration. The eMMC controller and SPI NAND controller share
the same GPIO pins, creating a hardware conflict:

Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
---
 arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts | 30 ---------------------
 1 file changed, 30 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
index accb15b0d742..347659d4f551 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
+++ b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
@@ -124,13 +124,6 @@ &qusb_phy_1 {
 	status = "okay";
 };
 
-&sdhc {
-	pinctrl-0 = <&sdc_default_state>;
-	pinctrl-names = "default";
-
-	status = "okay";
-};
-
 &sleep_clk {
 	clock-frequency = <32000>;
 };
@@ -201,29 +194,6 @@ mosi-pins {
 		};
 	};
 
-	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";
-			function = "sdc_data";
-			drive-strength = <8>;
-			bias-pull-up;
-		};
-	};
-
 	qpic_snand_default_state: qpic-snand-default-state {
 		clock-pins {
 			pins = "gpio5";
-- 
2.34.1