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Mon, 11 May 2026 01:54:35 -0700 (PDT) From: Iker Pedrosa Date: Mon, 11 May 2026 10:54:00 +0200 Subject: [PATCH v9 5/8] riscv: dts: spacemit: k1: add SD card controller and pinctrl support 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" Content-Transfer-Encoding: 7bit Message-Id: <20260511-orangepi-sd-card-uhs-v9-5-ae48c0b2b2cf@gmail.com> References: <20260511-orangepi-sd-card-uhs-v9-0-ae48c0b2b2cf@gmail.com> In-Reply-To: <20260511-orangepi-sd-card-uhs-v9-0-ae48c0b2b2cf@gmail.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yixun Lan , Ulf Hansson , Ulf Hansson , Yixun Lan Cc: 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, Iker Pedrosa , Anand Moon , Trevor Gamblin , Vincent Legoll X-Mailer: b4 0.14.3 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 34d88334e95e..4e9a62d0e85b 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -590,4 +590,44 @@ ssp3-0-frm-pins { power-source = <3300>; }; }; + + 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 24becab4c959..6ded5c06b797 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -1226,6 +1226,19 @@ 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"; + }; }; }; }; -- 2.54.0