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Mon, 13 Apr 2026 00:26:24 -0700 (PDT) From: Iker Pedrosa To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yixun Lan Cc: Iker Pedrosa , Troy Mitchell , Michael Opdenacker , Javier Martinez Canillas , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Anand Moon , Trevor Gamblin , Vincent Legoll Subject: [PATCH v7 5/9] riscv: dts: spacemit: k1: add SD card controller and pinctrl support Date: Mon, 13 Apr 2026 09:24:47 +0200 Message-ID: <20260413-orangepi-sd-card-uhs-v7-5-16650f49c022@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413-orangepi-sd-card-uhs-v7-0-16650f49c022@gmail.com> References: <20260413-orangepi-sd-card-uhs-v7-0-16650f49c022@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.14.3 Content-Transfer-Encoding: 8bit Add SD card controller infrastructure for SpacemiT K1 SoC with complete pinctrl support for both standard and UHS modes. - Add sdhci0 controller definition with clocks, resets and interrupts - Add mmc1_cfg pinctrl for 3.3V standard SD operation - Add mmc1_uhs_cfg pinctrl for 1.8V UHS high-speed operation - Configure appropriate drive strength and power-source properties This provides complete SD card infrastructure that K1-based boards can enable. Tested-by: Anand Moon Tested-by: Trevor Gamblin Tested-by: Vincent Legoll Reviewed-by: Troy Mitchell Signed-off-by: Iker Pedrosa --- arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 40 ++++++++++++++++++++++++++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 13 +++++++++ 2 files changed, 53 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index b13dcb10f4d6..b3c472a0783b 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -570,4 +570,44 @@ pwm14-1-pins { drive-strength = <32>; }; }; + + mmc1_cfg: mmc1-cfg { + mmc1-data-cmd-pins { + pinmux = , /* mmc1_d3 */ + , /* mmc1_d2 */ + , /* mmc1_d1 */ + , /* mmc1_d0 */ + ; /* mmc1_cmd */ + bias-pull-up = <1>; + drive-strength = <19>; + power-source = <3300>; + }; + + mmc1-clk-pins { + pinmux = ; /* mmc1_clk */ + bias-pull-down = <1>; + drive-strength = <19>; + power-source = <3300>; + }; + }; + + mmc1_uhs_cfg: mmc1-uhs-cfg { + mmc1-data-cmd-pins { + pinmux = , /* mmc1_d3 */ + , /* mmc1_d2 */ + , /* mmc1_d1 */ + , /* mmc1_d0 */ + ; /* mmc1_cmd */ + bias-pull-up = <1>; + drive-strength = <42>; + power-source = <1800>; + }; + + mmc1-clk-pins { + pinmux = ; /* mmc1_clk */ + bias-pull-down = <1>; + drive-strength = <42>; + power-source = <1800>; + }; + }; }; diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index f0bad6855c97..28949f804610 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -1211,6 +1211,19 @@ emmc: mmc@d4281000 { interrupts = <101>; status = "disabled"; }; + + sdhci0: mmc@d4280000 { + compatible = "spacemit,k1-sdhci"; + reg = <0x0 0xd4280000 0x0 0x200>; + clocks = <&syscon_apmu CLK_SDH_AXI>, + <&syscon_apmu CLK_SDH0>; + clock-names = "core", "io"; + resets = <&syscon_apmu RESET_SDH_AXI>, + <&syscon_apmu RESET_SDH0>; + reset-names = "axi", "sdh"; + interrupts = <99>; + status = "disabled"; + }; }; }; }; -- 2.53.0