linux-kernel - [PATCH 3/7] arm64: zynqmp: Add cap-mmc-hw-reset and no-sd, no-sdio property to eMMC

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Message-ID: <10132834c0509539b0d01ff5097591cd2e3ae125.1752835501.git.michal.simek@amd.com>
Date: Fri, 18 Jul 2025 12:45:08 +0200
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
	<michal.simek@...inx.com>, <git@...inx.com>
CC: Paul Alvin <alvin.paulp@....com>, Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Rob Herring <robh@...nel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@...r.kernel.org>, "moderated list:ARM/ZYNQ ARCHITECTURE"
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 3/7] arm64: zynqmp: Add cap-mmc-hw-reset and no-sd, no-sdio property to eMMC

From: Paul Alvin <alvin.paulp@....com>

Add "cap-mmc-hw-reset" property to the eMMC DT node to perform the
eMMC device hardware reset.
Also, add "no-sd", "no-sdio" properties to eMMC DT node to skip
unwanted sd, sdio related commands during initialization for eMMC
device as this may lead to unnecessary register dump.

Signed-off-by: Paul Alvin <alvin.paulp@....com>
Signed-off-by: Michal Simek <michal.simek@....com>
---

 arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts | 3 +++
 arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts | 3 +++
 2 files changed, 6 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 bfa7ea6b9224..51778df5540c 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
@@ -233,6 +233,9 @@ &sdhci0 { /* MIO13-23 - 16GB emmc MTFC16GAPALBH-IT - U133A */
 	pinctrl-0 = <&pinctrl_sdhci0_default>;
 	non-removable;
 	disable-wp;
+	no-sd;
+	no-sdio;
+	cap-mmc-hw-reset;
 	bus-width = <8>;
 	xlnx,mio-bank = <0>;
 	assigned-clock-rates = <187498123>;
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
index 62c2503a502a..3542844e6977 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
+++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
@@ -509,6 +509,9 @@ &sdhci1 {
 	xlnx,mio-bank = <0>;
 	non-removable;
 	disable-wp;
+	no-sd;
+	no-sdio;
+	cap-mmc-hw-reset;
 	cap-power-off-card;
 	mmc-pwrseq = <&sdio_pwrseq>;
 	vqmmc-supply = <&wmmcsdio_fixed>;
-- 
2.43.0