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From: Mateusz Nowicki <mateusz.nowicki@posteo.net>
To: alexandre.torgue@foss.st.com, mcoquelin.stm32@gmail.com
Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	devicetree@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] arm64: dts: st: add sdmmc2 node on stm32mp251
Date: Sat, 12 Sep 2026 20:45:04 +0000	[thread overview]
Message-ID: <20260912204454.219606-2-mateusz.nowicki@posteo.net> (raw)
In-Reply-To: <20260912204454.219606-1-mateusz.nowicki@posteo.net>

Add the SDMMC2 controller, the same PL18x/SDMMC2 block as SDMMC1 with
its own delay block in SYSCFG (DLYBSD2). It is used for the eMMC on
the STM32MP257F-DK and STM32MP257F-EV1 boards.

Signed-off-by: Mateusz Nowicki <mateusz.nowicki@posteo.net>
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 9c63fdb5a885..0d10023ec1e3 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -1667,6 +1667,21 @@ sdmmc1: mmc@48220000 {
 				status = "disabled";
 			};
 
+			sdmmc2: mmc@48230000 {
+				compatible = "st,stm32mp25-sdmmc2", "arm,pl18x", "arm,primecell";
+				arm,primecell-periphid = <0x00353180>;
+				reg = <0x48230000 0x400>, <0x44230800 0x8>;
+				interrupts = <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&rcc CK_KER_SDMMC2>;
+				clock-names = "apb_pclk";
+				resets = <&rcc SDMMC2_R>;
+				cap-sd-highspeed;
+				cap-mmc-highspeed;
+				max-frequency = <120000000>;
+				access-controllers = <&rifsc 77>;
+				status = "disabled";
+			};
+
 			ethernet1: ethernet@482c0000 {
 				compatible = "st,stm32mp25-dwmac", "snps,dwmac-5.20";
 				reg = <0x482c0000 0x4000>;
-- 
2.55.0



  reply	other threads:[~2026-09-12 20:45 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-12 20:45 [PATCH 0/3] arm64: dts: st: add eMMC support on STM32MP257F-DK Mateusz Nowicki
2026-09-12 20:45 ` Mateusz Nowicki [this message]
2026-09-12 20:45 ` [PATCH 2/3] arm64: dts: st: add sdmmc2 pins on stm32mp25 Mateusz Nowicki
2026-09-12 20:45 ` [PATCH 3/3] arm64: dts: st: enable eMMC on stm32mp257f-dk Mateusz Nowicki

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