[PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Iker Pedrosa]

Add complete SD card controller support with UHS high-speed modes.

- Enable sdhci0 controller with 4-bit bus width
- Configure card detect GPIO with inversion
- Connect vmmc-supply to buck4 for 3.3V card power
- Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
- Add dual pinctrl states for voltage-dependent pin configuration
- Support UHS-I SDR25, SDR50, and SDR104 modes

This enables full SD card functionality including high-speed UHS modes
for improved performance.

Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
---
 arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
 		};
 	};
 };
+
+&sdhci0 {
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc1_cfg>;
+	pinctrl-1 = <&mmc1_uhs_cfg>;
+	bus-width = <4>;
+	cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
+	cd-inverted;
+	no-mmc;
+	no-sdio;
+	disable-wp;
+	cap-sd-highspeed;
+	vmmc-supply = <&sd_vmmc>;
+	vqmmc-supply = <&sd_vqmmc>;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	status = "okay";
+};

-- 
2.53.0

[PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Iker Pedrosa]

Add complete SD card controller support with UHS high-speed modes.

- Enable sdhci0 controller with 4-bit bus width
- Configure card detect GPIO with inversion
- Connect vmmc-supply to buck4 for 3.3V card power
- Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
- Add dual pinctrl states for voltage-dependent pin configuration
- Support UHS-I SDR25, SDR50, and SDR104 modes

This enables full SD card functionality including high-speed UHS modes
for improved performance.

Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
---
 arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
 		};
 	};
 };
+
+&sdhci0 {
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc1_cfg>;
+	pinctrl-1 = <&mmc1_uhs_cfg>;
+	bus-width = <4>;
+	cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
+	cd-inverted;
+	no-mmc;
+	no-sdio;
+	disable-wp;
+	cap-sd-highspeed;
+	vmmc-supply = <&sd_vmmc>;
+	vqmmc-supply = <&sd_vqmmc>;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	status = "okay";
+};

-- 
2.53.0


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Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[kernel test robot]

:::::: 
:::::: Manual check reason: "dtcheck: binding changes may go via different trees"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20260309-orangepi-sd-card-uhs-v2-7-5bb2b574df5d@gmail.com>
References: <20260309-orangepi-sd-card-uhs-v2-7-5bb2b574df5d@gmail.com>
TO: Iker Pedrosa <ikerpedrosam@gmail.com>
TO: Ulf Hansson <ulf.hansson@linaro.org>
TO: Rob Herring <robh@kernel.org>
TO: Krzysztof Kozlowski <krzk@kernel.org>
TO: Conor Dooley <conor+dt@kernel.org>
TO: Adrian Hunter <adrian.hunter@intel.com>
TO: Paul Walmsley <pjw@kernel.org>
TO: Palmer Dabbelt <palmer@dabbelt.com>
TO: Albert Ou <aou@eecs.berkeley.edu>
TO: Alexandre Ghiti <alex@ghiti.fr>
TO: Yixun Lan <dlan@kernel.org>
CC: Michael Opdenacker <michael.opdenacker@rootcommit.com>
CC: Javier Martinez Canillas <javierm@redhat.com>
CC: linux-mmc@vger.kernel.org
CC: devicetree@vger.kernel.org
CC: linux-riscv@lists.infradead.org
CC: spacemit@lists.linux.dev
CC: linux-kernel@vger.kernel.org
CC: Iker Pedrosa <ikerpedrosam@gmail.com>

Hi Iker,

kernel test robot noticed the following build warnings:

[auto build test WARNING on ec1fb4e55df47ed043ab2ccc6787e39b9d67e49b]

url:    https://github.com/intel-lab-lkp/linux/commits/Iker-Pedrosa/mmc-sdhci-of-k1-enable-essential-clock-infrastructure-for-SD-operation/20260309-194400
base:   ec1fb4e55df47ed043ab2ccc6787e39b9d67e49b
patch link:    https://lore.kernel.org/r/20260309-orangepi-sd-card-uhs-v2-7-5bb2b574df5d%40gmail.com
patch subject: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes
:::::: branch date: 3 days ago
:::::: commit date: 3 days ago
config: riscv-randconfig-2051-20260311 (https://download.01.org/0day-ci/archive/20260312/202603120455.ZuF5ZSOi-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 8.5.0
dtschema: 2025.13.dev8+g0515abdd9
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260312/202603120455.ZuF5ZSOi-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202603120455.ZuF5ZSOi-lkp@intel.com/

dtcheck warnings: (new ones prefixed by >>)
>> arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dtb: mmc@d4280000 (spacemit,k1-sdhci): Unevaluated properties are not allowed ('reset-names', 'resets' were unexpected)
   	from schema $id: http://devicetree.org/schemas/mmc/spacemit,sdhci.yaml

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Anand Moon]

Hi Iker,

On Mon, 9 Mar 2026 at 17:11, Iker Pedrosa <ikerpedrosam@gmail.com> wrote:
>
> Add complete SD card controller support with UHS high-speed modes.
>
> - Enable sdhci0 controller with 4-bit bus width
> - Configure card detect GPIO with inversion
> - Connect vmmc-supply to buck4 for 3.3V card power
> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> - Add dual pinctrl states for voltage-dependent pin configuration
> - Support UHS-I SDR25, SDR50, and SDR104 modes
>
> This enables full SD card functionality including high-speed UHS modes
> for improved performance.
>
> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>

Can you add the same node for k1-bananapi-f3.dts in the next version?

Thanks
-Anand

Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Anand Moon]

Hi Iker,

On Mon, 9 Mar 2026 at 17:11, Iker Pedrosa <ikerpedrosam@gmail.com> wrote:
>
> Add complete SD card controller support with UHS high-speed modes.
>
> - Enable sdhci0 controller with 4-bit bus width
> - Configure card detect GPIO with inversion
> - Connect vmmc-supply to buck4 for 3.3V card power
> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> - Add dual pinctrl states for voltage-dependent pin configuration
> - Support UHS-I SDR25, SDR50, and SDR104 modes
>
> This enables full SD card functionality including high-speed UHS modes
> for improved performance.
>
> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>

Can you add the same node for k1-bananapi-f3.dts in the next version?

Thanks
-Anand

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Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Trevor Gamblin]

On 2026-03-09 07:40, Iker Pedrosa wrote:
> Add complete SD card controller support with UHS high-speed modes.
>
> - Enable sdhci0 controller with 4-bit bus width
> - Configure card detect GPIO with inversion
> - Connect vmmc-supply to buck4 for 3.3V card power
> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> - Add dual pinctrl states for voltage-dependent pin configuration
> - Support UHS-I SDR25, SDR50, and SDR104 modes
>
> This enables full SD card functionality including high-speed UHS modes
> for improved performance.
>
> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
> ---
>   arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
>   1 file changed, 19 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> @@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
>   		};
>   	};
>   };
> +
> +&sdhci0 {
> +	pinctrl-names = "default", "state_uhs";
> +	pinctrl-0 = <&mmc1_cfg>;
> +	pinctrl-1 = <&mmc1_uhs_cfg>;
> +	bus-width = <4>;
> +	cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> +	cd-inverted;
> +	no-mmc;
> +	no-sdio;
> +	disable-wp;
> +	cap-sd-highspeed;
> +	vmmc-supply = <&sd_vmmc>;
> +	vqmmc-supply = <&sd_vqmmc>;
> +	sd-uhs-sdr25;
> +	sd-uhs-sdr50;
> +	sd-uhs-sdr104;
> +	status = "okay";
> +};
>
Hello again,

Thanks for doing this work. My colleagues and I have been testing this 
on an OrangePi RV2, and also a Muse Pi Pro board (making a similar tweak 
to this patch in k1-musepi-pro.dts). To do the testing on my end, I'm 
applying the patch series on top of 6.19 in a Yocto BSP.

I've been finding that I see issues with the UHS support on my side 
(this log comes from an image built and flashed to an SD card):


[ 1.072417] sdhci-spacemit d4280000.mmc: Got CD GPIO
[ 1.109741] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using 
ADMA
[ 1.114589] clk: Disabling unused clocks
[ 1.118421] PM: genpd: Disabling unused power domains
[ 1.123249] ALSA device list:
[ 1.126[ 1.129949] check access for rdinit=/init failed: -2, ignoring
[ 1.133284] Waiting for root device 
PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[ 1.176569] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
[ 1.180732] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[ 1.276268] mmcblk0: recovery failed!
[ 1.277351] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 
0x800000 phys_seg 1 prio class 2
[ 1.286346] Buffer I/O error on dev mmcblk0, logical block 0, async page 
read
[ 1.293891] mmcblk0: recovery failed!
[ 1.297289] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 
0x800000 phys_seg 1 prio class 2
[ 1.306269] Buffer I/O error on dev mmcblk0, logical block 0, async page 
read
[ 1.313522] mmcblk0: unable to read partition table


At first I wondered if maybe there was an issue with the card itself, 
but by changing the sdhci0 section to this, I'm able to read the SD just 
fine:

&sdhci0 {
          pinctrl-names = "default";
          pinctrl-0 = <&mmc1_cfg>;
          bus-width = <4>;
          cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
          cd-inverted;
          no-mmc;
          no-sdio;
          disable-wp;
          vmmc-supply = <&sd_vmmc>;
          vqmmc-supply = <&sd_vqmmc>;
          no-1-8-v;
          status = "okay";
};

Here's the boot log, for comparison:

[    1.068399] sdhci-spacemit d4280000.mmc: Got CD GPIO
[    1.105952] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] 
using ADMA
[    1.110807] clk: Disabling unused clocks
[    1.114624] PM: genpd: Disabling unused power domains
[    1.119456] ALSA device list:
[    1.122[    1.126159] check access for rdinit=/init failed: -2, ignoring
[    1.129491] Waiting for root device 
PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[    1.155817] mmc0: new high speed SDHC card at address aaaa
[    1.159367] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[    1.173666] GPT:Primary header thinks Alt. header is not at the end 
of the disk.
[    1.178530] GPT:1135739 != 31116287
[    1.182045] GPT:Alternate GPT header not at the end of the disk.
[    1.188124] GPT:1135739 != 31116287
[    1.191650] GPT: Use GNU Parted to correct GPT errors.
[    1.196894]  mmcblk0: p1 p2 p3
[    1.375482] EXT4-fs (mmcblk0p3): recovery complete
[    1.379459] EXT4-fs (mmcblk0p3): mounted filesystem 
ad761819-1030-44fe-9267-f59c53c4b5c4 r/w with ordered data mode. Quota 
mode: disabled.
[    1.390400] VFS: Mounted root (ext4 filesystem) on device 179:3.


To be sure, I tried a different SDXC card with your version and saw:


[    1.064528] sdhci-spacemit d4280000.mmc: Got CD GPIO
[    1.102113] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] 
using ADMA
[    1.106978] clk: Disabling unused clocks
[    1.110792] PM: genpd: Disabling unused power domains
[    1.115622] ALSA device list:
[    1.118[    1.122325] check access for rdinit=/init failed: -2, ignoring
[    1.125656] Waiting for root device 
PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[    1.215840] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.220520] mmc0: tuning execution failed: -5
[    1.224931] mmc0: error -5 whilst initialising SD card
[    1.378228] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.382901] mmc0: tuning execution failed: -5
[    1.506443] mmc0: new high speed SDXC card at address 1388
[    1.510009] mmcblk0: mmc0:1388 SATC 57.7 GiB
[    1.645467] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.650158] mmc0: tuning execution failed: -5
[    1.772856] GPT:Primary header thinks Alt. header is not at the end 
of the disk.
[    1.777718] GPT:1135725 != 120930303
[    1.781317] GPT:Alternate GPT header not at the end of the disk.
[    1.787397] GPT:1135725 != 120930303
[    1.791022] GPT: Use GNU Parted to correct GPT errors.
[    1.796238]  mmcblk0: p1 p2 p3
[    1.917789] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.922483] mmc0: tuning execution failed: -5
[    2.174518] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    2.179193] mmc0: tuning execution failed: -5
[    2.337900] EXT4-fs (mmcblk0p3): mounted filesystem 
d1f9e739-cc74-4c48-a774-390717721c53 r/w with ordered data mode. Quota 
mode: disabled.
[    2.348031] VFS: Mounted root (ext4 filesystem) on device 179:3.
[    2.492089] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    2.496771] mmc0: tuning execution failed: -5
[    2.617641] devtmpfs: mounted
[    2.618771] Freeing unused kernel image (initmem) memory: 2432K
[    2.624085] Run /sbin/init as init process
[    2.749813] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    2.754492] mmc0: tuning execution failed: -5
[    3.013665] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.018357] mmc0: tuning execution failed: -5
[    3.279459] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.284139] mmc0: tuning execution failed: -5
[    3.541764] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.546450] mmc0: tuning execution failed: -5
[    3.665967] I/O error, dev mmcblk0, sector 259162 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.672894] I/O error, dev mmcblk0, sector 259163 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.683275] I/O error, dev mmcblk0, sector 259170 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.691878] I/O error, dev mmcblk0, sector 259172 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.701516] I/O error, dev mmcblk0, sector 259175 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.711067] I/O error, dev mmcblk0, sector 259178 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.720183] I/O error, dev mmcblk0, sector 259180 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.730004] I/O error, dev mmcblk0, sector 259183 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.739010] I/O error, dev mmcblk0, sector 259184 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.888355] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.893045] mmc0: tuning execution failed: -5
[    4.149999] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    4.154686] mmc0: tuning execution failed: -5
[    4.283933] I/O error, dev mmcblk0, sector 209865 op 0x0:(READ) flags 
0x803000 phys_seg 1 prio class 2
[    4.290750] EXT4-fs warning (device mmcblk0p3): 
ext4_dx_find_entry:1726: inode #768: lblock 1: comm swapper/0: error -5 
reading directory block
[    4.303879] Starting init: /sbin/init exists but couldn't execute it 
(error -5)
[    4.311194] Run /etc/init as init process
[    4.316220] Run /bin/init as init process
[    4.319996] Run /bin/sh as init process
[    4.457522] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    4.462200] mmc0: tuning execution failed: -5
[    4.719271] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    4.723945] mmc0: tuning execution failed: -5
[    4.842487] EXT4-fs warning (device mmcblk0p3): 
ext4_dx_find_entry:1726: inode #768: lblock 1: comm swapper/0: error -5 
reading directory block
[    4.852959] Starting init: /bin/sh exists but couldn't execute it 
(error -5)
[    4.860044] Kernel panic - not syncing: No working init found.  Try 
passing init= option to kernel. See Linux 
Documentation/admin-guide/init.rst for guidance.
[    4.874394] CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 
6.19.0-00008-ga23b3fad2d87 #1 NONE
[    4.883295] Hardware name: OrangePi RV2 (DT)


I don't think I've missed anything between 6.19 and 7.x, but it's 
possible. It seems like there's a timing issue at play?

Let me know if I can help with further testing. I'm also in #spacemit on 
IRC.

Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Trevor Gamblin]

On 2026-03-09 07:40, Iker Pedrosa wrote:
> Add complete SD card controller support with UHS high-speed modes.
>
> - Enable sdhci0 controller with 4-bit bus width
> - Configure card detect GPIO with inversion
> - Connect vmmc-supply to buck4 for 3.3V card power
> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> - Add dual pinctrl states for voltage-dependent pin configuration
> - Support UHS-I SDR25, SDR50, and SDR104 modes
>
> This enables full SD card functionality including high-speed UHS modes
> for improved performance.
>
> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
> ---
>   arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
>   1 file changed, 19 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> @@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
>   		};
>   	};
>   };
> +
> +&sdhci0 {
> +	pinctrl-names = "default", "state_uhs";
> +	pinctrl-0 = <&mmc1_cfg>;
> +	pinctrl-1 = <&mmc1_uhs_cfg>;
> +	bus-width = <4>;
> +	cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> +	cd-inverted;
> +	no-mmc;
> +	no-sdio;
> +	disable-wp;
> +	cap-sd-highspeed;
> +	vmmc-supply = <&sd_vmmc>;
> +	vqmmc-supply = <&sd_vqmmc>;
> +	sd-uhs-sdr25;
> +	sd-uhs-sdr50;
> +	sd-uhs-sdr104;
> +	status = "okay";
> +};
>
Hello again,

Thanks for doing this work. My colleagues and I have been testing this 
on an OrangePi RV2, and also a Muse Pi Pro board (making a similar tweak 
to this patch in k1-musepi-pro.dts). To do the testing on my end, I'm 
applying the patch series on top of 6.19 in a Yocto BSP.

I've been finding that I see issues with the UHS support on my side 
(this log comes from an image built and flashed to an SD card):


[ 1.072417] sdhci-spacemit d4280000.mmc: Got CD GPIO
[ 1.109741] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using 
ADMA
[ 1.114589] clk: Disabling unused clocks
[ 1.118421] PM: genpd: Disabling unused power domains
[ 1.123249] ALSA device list:
[ 1.126[ 1.129949] check access for rdinit=/init failed: -2, ignoring
[ 1.133284] Waiting for root device 
PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[ 1.176569] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
[ 1.180732] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[ 1.276268] mmcblk0: recovery failed!
[ 1.277351] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 
0x800000 phys_seg 1 prio class 2
[ 1.286346] Buffer I/O error on dev mmcblk0, logical block 0, async page 
read
[ 1.293891] mmcblk0: recovery failed!
[ 1.297289] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 
0x800000 phys_seg 1 prio class 2
[ 1.306269] Buffer I/O error on dev mmcblk0, logical block 0, async page 
read
[ 1.313522] mmcblk0: unable to read partition table


At first I wondered if maybe there was an issue with the card itself, 
but by changing the sdhci0 section to this, I'm able to read the SD just 
fine:

&sdhci0 {
          pinctrl-names = "default";
          pinctrl-0 = <&mmc1_cfg>;
          bus-width = <4>;
          cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
          cd-inverted;
          no-mmc;
          no-sdio;
          disable-wp;
          vmmc-supply = <&sd_vmmc>;
          vqmmc-supply = <&sd_vqmmc>;
          no-1-8-v;
          status = "okay";
};

Here's the boot log, for comparison:

[    1.068399] sdhci-spacemit d4280000.mmc: Got CD GPIO
[    1.105952] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] 
using ADMA
[    1.110807] clk: Disabling unused clocks
[    1.114624] PM: genpd: Disabling unused power domains
[    1.119456] ALSA device list:
[    1.122[    1.126159] check access for rdinit=/init failed: -2, ignoring
[    1.129491] Waiting for root device 
PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[    1.155817] mmc0: new high speed SDHC card at address aaaa
[    1.159367] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[    1.173666] GPT:Primary header thinks Alt. header is not at the end 
of the disk.
[    1.178530] GPT:1135739 != 31116287
[    1.182045] GPT:Alternate GPT header not at the end of the disk.
[    1.188124] GPT:1135739 != 31116287
[    1.191650] GPT: Use GNU Parted to correct GPT errors.
[    1.196894]  mmcblk0: p1 p2 p3
[    1.375482] EXT4-fs (mmcblk0p3): recovery complete
[    1.379459] EXT4-fs (mmcblk0p3): mounted filesystem 
ad761819-1030-44fe-9267-f59c53c4b5c4 r/w with ordered data mode. Quota 
mode: disabled.
[    1.390400] VFS: Mounted root (ext4 filesystem) on device 179:3.


To be sure, I tried a different SDXC card with your version and saw:


[    1.064528] sdhci-spacemit d4280000.mmc: Got CD GPIO
[    1.102113] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] 
using ADMA
[    1.106978] clk: Disabling unused clocks
[    1.110792] PM: genpd: Disabling unused power domains
[    1.115622] ALSA device list:
[    1.118[    1.122325] check access for rdinit=/init failed: -2, ignoring
[    1.125656] Waiting for root device 
PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[    1.215840] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.220520] mmc0: tuning execution failed: -5
[    1.224931] mmc0: error -5 whilst initialising SD card
[    1.378228] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.382901] mmc0: tuning execution failed: -5
[    1.506443] mmc0: new high speed SDXC card at address 1388
[    1.510009] mmcblk0: mmc0:1388 SATC 57.7 GiB
[    1.645467] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.650158] mmc0: tuning execution failed: -5
[    1.772856] GPT:Primary header thinks Alt. header is not at the end 
of the disk.
[    1.777718] GPT:1135725 != 120930303
[    1.781317] GPT:Alternate GPT header not at the end of the disk.
[    1.787397] GPT:1135725 != 120930303
[    1.791022] GPT: Use GNU Parted to correct GPT errors.
[    1.796238]  mmcblk0: p1 p2 p3
[    1.917789] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    1.922483] mmc0: tuning execution failed: -5
[    2.174518] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    2.179193] mmc0: tuning execution failed: -5
[    2.337900] EXT4-fs (mmcblk0p3): mounted filesystem 
d1f9e739-cc74-4c48-a774-390717721c53 r/w with ordered data mode. Quota 
mode: disabled.
[    2.348031] VFS: Mounted root (ext4 filesystem) on device 179:3.
[    2.492089] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    2.496771] mmc0: tuning execution failed: -5
[    2.617641] devtmpfs: mounted
[    2.618771] Freeing unused kernel image (initmem) memory: 2432K
[    2.624085] Run /sbin/init as init process
[    2.749813] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    2.754492] mmc0: tuning execution failed: -5
[    3.013665] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.018357] mmc0: tuning execution failed: -5
[    3.279459] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.284139] mmc0: tuning execution failed: -5
[    3.541764] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.546450] mmc0: tuning execution failed: -5
[    3.665967] I/O error, dev mmcblk0, sector 259162 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.672894] I/O error, dev mmcblk0, sector 259163 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.683275] I/O error, dev mmcblk0, sector 259170 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.691878] I/O error, dev mmcblk0, sector 259172 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.701516] I/O error, dev mmcblk0, sector 259175 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.711067] I/O error, dev mmcblk0, sector 259178 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.720183] I/O error, dev mmcblk0, sector 259180 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.730004] I/O error, dev mmcblk0, sector 259183 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.739010] I/O error, dev mmcblk0, sector 259184 op 0x0:(READ) flags 
0x880700 phys_seg 1 prio class 2
[    3.888355] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    3.893045] mmc0: tuning execution failed: -5
[    4.149999] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    4.154686] mmc0: tuning execution failed: -5
[    4.283933] I/O error, dev mmcblk0, sector 209865 op 0x0:(READ) flags 
0x803000 phys_seg 1 prio class 2
[    4.290750] EXT4-fs warning (device mmcblk0p3): 
ext4_dx_find_entry:1726: inode #768: lblock 1: comm swapper/0: error -5 
reading directory block
[    4.303879] Starting init: /sbin/init exists but couldn't execute it 
(error -5)
[    4.311194] Run /etc/init as init process
[    4.316220] Run /bin/init as init process
[    4.319996] Run /bin/sh as init process
[    4.457522] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    4.462200] mmc0: tuning execution failed: -5
[    4.719271] sdhci-spacemit d4280000.mmc: Tuning failed: no stable 
window found
[    4.723945] mmc0: tuning execution failed: -5
[    4.842487] EXT4-fs warning (device mmcblk0p3): 
ext4_dx_find_entry:1726: inode #768: lblock 1: comm swapper/0: error -5 
reading directory block
[    4.852959] Starting init: /bin/sh exists but couldn't execute it 
(error -5)
[    4.860044] Kernel panic - not syncing: No working init found.  Try 
passing init= option to kernel. See Linux 
Documentation/admin-guide/init.rst for guidance.
[    4.874394] CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 
6.19.0-00008-ga23b3fad2d87 #1 NONE
[    4.883295] Hardware name: OrangePi RV2 (DT)


I don't think I've missed anything between 6.19 and 7.x, but it's 
possible. It seems like there's a timing issue at play?

Let me know if I can help with further testing. I'm also in #spacemit on 
IRC.



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Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Anand Moon]

Hi Trevor,

On Fri, 13 Mar 2026 at 19:26, Trevor Gamblin <tgamblin@baylibre.com> wrote:
>
>
> On 2026-03-09 07:40, Iker Pedrosa wrote:
> > Add complete SD card controller support with UHS high-speed modes.
> >
> > - Enable sdhci0 controller with 4-bit bus width
> > - Configure card detect GPIO with inversion
> > - Connect vmmc-supply to buck4 for 3.3V card power
> > - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> > - Add dual pinctrl states for voltage-dependent pin configuration
> > - Support UHS-I SDR25, SDR50, and SDR104 modes
> >
> > This enables full SD card functionality including high-speed UHS modes
> > for improved performance.
> >
> > Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
> > ---
> >   arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
> >   1 file changed, 19 insertions(+)
> >
> > diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> > index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
> > --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> > +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> > @@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
> >               };
> >       };
> >   };
> > +
> > +&sdhci0 {
> > +     pinctrl-names = "default", "state_uhs";
> > +     pinctrl-0 = <&mmc1_cfg>;
> > +     pinctrl-1 = <&mmc1_uhs_cfg>;
> > +     bus-width = <4>;
> > +     cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> > +     cd-inverted;
> > +     no-mmc;
> > +     no-sdio;
> > +     disable-wp;
> > +     cap-sd-highspeed;
> > +     vmmc-supply = <&sd_vmmc>;
> > +     vqmmc-supply = <&sd_vqmmc>;
> > +     sd-uhs-sdr25;
> > +     sd-uhs-sdr50;
> > +     sd-uhs-sdr104;
> > +     status = "okay";
> > +};
> >
> Hello again,
>
> Thanks for doing this work. My colleagues and I have been testing this
> on an OrangePi RV2, and also a Muse Pi Pro board (making a similar tweak
> to this patch in k1-musepi-pro.dts). To do the testing on my end, I'm
> applying the patch series on top of 6.19 in a Yocto BSP.
>
> I've been finding that I see issues with the UHS support on my side
> (this log comes from an image built and flashed to an SD card):
>
>
> [ 1.072417] sdhci-spacemit d4280000.mmc: Got CD GPIO
> [ 1.109741] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using
> ADMA
> [ 1.114589] clk: Disabling unused clocks
> [ 1.118421] PM: genpd: Disabling unused power domains
> [ 1.123249] ALSA device list:
> [ 1.126[ 1.129949] check access for rdinit=/init failed: -2, ignoring
> [ 1.133284] Waiting for root device
> PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
> [ 1.176569] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
> [ 1.180732] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
> [ 1.276268] mmcblk0: recovery failed!
> [ 1.277351] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
> 0x800000 phys_seg 1 prio class 2
> [ 1.286346] Buffer I/O error on dev mmcblk0, logical block 0, async page
> read
> [ 1.293891] mmcblk0: recovery failed!
> [ 1.297289] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
> 0x800000 phys_seg 1 prio class 2
> [ 1.306269] Buffer I/O error on dev mmcblk0, logical block 0, async page
> read
> [ 1.313522] mmcblk0: unable to read partition table
>
>
> At first I wondered if maybe there was an issue with the card itself,
> but by changing the sdhci0 section to this, I'm able to read the SD just
> fine:
>
I used the same example on the K1-OrangePi-RV2 DTS,
But it’s slightly different from the one you’re working with.
I tested on the latest  7.0-rc3.

> &sdhci0 {
>           pinctrl-names = "default";
>           pinctrl-0 = <&mmc1_cfg>;
>           bus-width = <4>;
>           cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
>           cd-inverted;
>           no-mmc;
>           no-sdio;
>           disable-wp;
>           vmmc-supply = <&sd_vmmc>;
>           vqmmc-supply = <&sd_vqmmc>;
>           no-1-8-v;
>           status = "okay";
> };
>
+
+&sdhci0 {
+       pinctrl-names = "default", "state_uhs";
+       pinctrl-0 = <&mmc1_cfg>;
+       pinctrl-1 = <&mmc1_uhs_cfg>;
+       bus-width = <4>;
+       cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
+       cd-inverted;
+       no-mmc;
+       no-sdio;
+       disable-wp;
+       cap-sd-highspeed;
+       vmmc-supply = <&sd_vmmc>;
+       vqmmc-supply = <&sd_vqmmc>;
+       sd-uhs-sdr25;
+       sd-uhs-sdr50;
+       sd-uhs-sdr104;
+       status = "okay";
+};

Thanks
-Anand

Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Anand Moon]

Hi Trevor,

On Fri, 13 Mar 2026 at 19:26, Trevor Gamblin <tgamblin@baylibre.com> wrote:
>
>
> On 2026-03-09 07:40, Iker Pedrosa wrote:
> > Add complete SD card controller support with UHS high-speed modes.
> >
> > - Enable sdhci0 controller with 4-bit bus width
> > - Configure card detect GPIO with inversion
> > - Connect vmmc-supply to buck4 for 3.3V card power
> > - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
> > - Add dual pinctrl states for voltage-dependent pin configuration
> > - Support UHS-I SDR25, SDR50, and SDR104 modes
> >
> > This enables full SD card functionality including high-speed UHS modes
> > for improved performance.
> >
> > Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
> > ---
> >   arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
> >   1 file changed, 19 insertions(+)
> >
> > diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> > index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
> > --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> > +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> > @@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
> >               };
> >       };
> >   };
> > +
> > +&sdhci0 {
> > +     pinctrl-names = "default", "state_uhs";
> > +     pinctrl-0 = <&mmc1_cfg>;
> > +     pinctrl-1 = <&mmc1_uhs_cfg>;
> > +     bus-width = <4>;
> > +     cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> > +     cd-inverted;
> > +     no-mmc;
> > +     no-sdio;
> > +     disable-wp;
> > +     cap-sd-highspeed;
> > +     vmmc-supply = <&sd_vmmc>;
> > +     vqmmc-supply = <&sd_vqmmc>;
> > +     sd-uhs-sdr25;
> > +     sd-uhs-sdr50;
> > +     sd-uhs-sdr104;
> > +     status = "okay";
> > +};
> >
> Hello again,
>
> Thanks for doing this work. My colleagues and I have been testing this
> on an OrangePi RV2, and also a Muse Pi Pro board (making a similar tweak
> to this patch in k1-musepi-pro.dts). To do the testing on my end, I'm
> applying the patch series on top of 6.19 in a Yocto BSP.
>
> I've been finding that I see issues with the UHS support on my side
> (this log comes from an image built and flashed to an SD card):
>
>
> [ 1.072417] sdhci-spacemit d4280000.mmc: Got CD GPIO
> [ 1.109741] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using
> ADMA
> [ 1.114589] clk: Disabling unused clocks
> [ 1.118421] PM: genpd: Disabling unused power domains
> [ 1.123249] ALSA device list:
> [ 1.126[ 1.129949] check access for rdinit=/init failed: -2, ignoring
> [ 1.133284] Waiting for root device
> PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
> [ 1.176569] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
> [ 1.180732] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
> [ 1.276268] mmcblk0: recovery failed!
> [ 1.277351] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
> 0x800000 phys_seg 1 prio class 2
> [ 1.286346] Buffer I/O error on dev mmcblk0, logical block 0, async page
> read
> [ 1.293891] mmcblk0: recovery failed!
> [ 1.297289] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
> 0x800000 phys_seg 1 prio class 2
> [ 1.306269] Buffer I/O error on dev mmcblk0, logical block 0, async page
> read
> [ 1.313522] mmcblk0: unable to read partition table
>
>
> At first I wondered if maybe there was an issue with the card itself,
> but by changing the sdhci0 section to this, I'm able to read the SD just
> fine:
>
I used the same example on the K1-OrangePi-RV2 DTS,
But it’s slightly different from the one you’re working with.
I tested on the latest  7.0-rc3.

> &sdhci0 {
>           pinctrl-names = "default";
>           pinctrl-0 = <&mmc1_cfg>;
>           bus-width = <4>;
>           cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
>           cd-inverted;
>           no-mmc;
>           no-sdio;
>           disable-wp;
>           vmmc-supply = <&sd_vmmc>;
>           vqmmc-supply = <&sd_vqmmc>;
>           no-1-8-v;
>           status = "okay";
> };
>
+
+&sdhci0 {
+       pinctrl-names = "default", "state_uhs";
+       pinctrl-0 = <&mmc1_cfg>;
+       pinctrl-1 = <&mmc1_uhs_cfg>;
+       bus-width = <4>;
+       cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
+       cd-inverted;
+       no-mmc;
+       no-sdio;
+       disable-wp;
+       cap-sd-highspeed;
+       vmmc-supply = <&sd_vmmc>;
+       vqmmc-supply = <&sd_vqmmc>;
+       sd-uhs-sdr25;
+       sd-uhs-sdr50;
+       sd-uhs-sdr104;
+       status = "okay";
+};

Thanks
-Anand

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Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Trevor Gamblin]

On 2026-03-13 10:42, Anand Moon wrote:
> Hi Trevor,
>
> On Fri, 13 Mar 2026 at 19:26, Trevor Gamblin<tgamblin@baylibre.com> wrote:
>> On 2026-03-09 07:40, Iker Pedrosa wrote:
>>> Add complete SD card controller support with UHS high-speed modes.
>>>
>>> - Enable sdhci0 controller with 4-bit bus width
>>> - Configure card detect GPIO with inversion
>>> - Connect vmmc-supply to buck4 for 3.3V card power
>>> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
>>> - Add dual pinctrl states for voltage-dependent pin configuration
>>> - Support UHS-I SDR25, SDR50, and SDR104 modes
>>>
>>> This enables full SD card functionality including high-speed UHS modes
>>> for improved performance.
>>>
>>> Signed-off-by: Iker Pedrosa<ikerpedrosam@gmail.com>
>>> ---
>>>    arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
>>>    1 file changed, 19 insertions(+)
>>>
>>> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>>> index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
>>> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>>> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>>> @@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
>>>                };
>>>        };
>>>    };
>>> +
>>> +&sdhci0 {
>>> +     pinctrl-names = "default", "state_uhs";
>>> +     pinctrl-0 = <&mmc1_cfg>;
>>> +     pinctrl-1 = <&mmc1_uhs_cfg>;
>>> +     bus-width = <4>;
>>> +     cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
>>> +     cd-inverted;
>>> +     no-mmc;
>>> +     no-sdio;
>>> +     disable-wp;
>>> +     cap-sd-highspeed;
>>> +     vmmc-supply = <&sd_vmmc>;
>>> +     vqmmc-supply = <&sd_vqmmc>;
>>> +     sd-uhs-sdr25;
>>> +     sd-uhs-sdr50;
>>> +     sd-uhs-sdr104;
>>> +     status = "okay";
>>> +};
>>>
>> Hello again,
>>
>> Thanks for doing this work. My colleagues and I have been testing this
>> on an OrangePi RV2, and also a Muse Pi Pro board (making a similar tweak
>> to this patch in k1-musepi-pro.dts). To do the testing on my end, I'm
>> applying the patch series on top of 6.19 in a Yocto BSP.
>>
>> I've been finding that I see issues with the UHS support on my side
>> (this log comes from an image built and flashed to an SD card):
>>
>>
>> [ 1.072417] sdhci-spacemit d4280000.mmc: Got CD GPIO
>> [ 1.109741] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using
>> ADMA
>> [ 1.114589] clk: Disabling unused clocks
>> [ 1.118421] PM: genpd: Disabling unused power domains
>> [ 1.123249] ALSA device list:
>> [ 1.126[ 1.129949] check access for rdinit=/init failed: -2, ignoring
>> [ 1.133284] Waiting for root device
>> PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
>> [ 1.176569] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
>> [ 1.180732] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
>> [ 1.276268] mmcblk0: recovery failed!
>> [ 1.277351] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
>> 0x800000 phys_seg 1 prio class 2
>> [ 1.286346] Buffer I/O error on dev mmcblk0, logical block 0, async page
>> read
>> [ 1.293891] mmcblk0: recovery failed!
>> [ 1.297289] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
>> 0x800000 phys_seg 1 prio class 2
>> [ 1.306269] Buffer I/O error on dev mmcblk0, logical block 0, async page
>> read
>> [ 1.313522] mmcblk0: unable to read partition table
>>
>>
>> At first I wondered if maybe there was an issue with the card itself,
>> but by changing the sdhci0 section to this, I'm able to read the SD just
>> fine:
>>
> I used the same example on the K1-OrangePi-RV2 DTS,
> But it’s slightly different from the one you’re working with.
> I tested on the latest  7.0-rc3.
>
>> &sdhci0 {
>>            pinctrl-names = "default";
>>            pinctrl-0 = <&mmc1_cfg>;
>>            bus-width = <4>;
>>            cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
>>            cd-inverted;
>>            no-mmc;
>>            no-sdio;
>>            disable-wp;
>>            vmmc-supply = <&sd_vmmc>;
>>            vqmmc-supply = <&sd_vqmmc>;
>>            no-1-8-v;
>>            status = "okay";
>> };
>>
> +
> +&sdhci0 {
> +       pinctrl-names = "default", "state_uhs";
> +       pinctrl-0 = <&mmc1_cfg>;
> +       pinctrl-1 = <&mmc1_uhs_cfg>;
> +       bus-width = <4>;
> +       cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> +       cd-inverted;
> +       no-mmc;
> +       no-sdio;
> +       disable-wp;
> +       cap-sd-highspeed;
> +       vmmc-supply = <&sd_vmmc>;
> +       vqmmc-supply = <&sd_vqmmc>;
> +       sd-uhs-sdr25;
> +       sd-uhs-sdr50;
> +       sd-uhs-sdr104;
> +       status = "okay";
> +};
>
> Thanks
> -Anand
Yes, my mistake - with 7.0-rc3 it works for me:

[    1.071767] sdhci-spacemit d4280000.mmc: Got CD GPIO
[    1.110368] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using ADMA
[    1.115231] clk: Disabling unused clocks
[    1.119072] PM: genpd: Disabling unused power domains
[    1.123875] ALSA device list:
[    1.1268[    1.130718] Waiting for root device PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[    1.181158] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
[    1.185341] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[    1.198009] GPT:Primary header thinks Alt. header is not at the end of the disk.
[    1.202874] GPT:1134331 != 31116287
[    1.206388] GPT:Alternate GPT header not at the end of the disk.
[    1.212468] GPT:1134331 != 31116287
[    1.215993] GPT: Use GNU Parted to correct GPT errors.
[    1.221230]  mmcblk0: p1 p2 p3
[    1.529978] EXT4-fs (mmcblk0p3): mounted filesystem dbc76877-092e-4f8a-9f06-bf286309d8de r/w with ordered data mode. Quota mode: disabled.
[    1.540069] VFS: Mounted root (ext4 filesystem) on device 179:3.


In which case:

Tested-by: Trevor Gamblin <tgamblin@baylibre.com>

Re: [PATCH v2 7/7] riscv: dts: spacemit: k1-orangepi-rv2: add SD card support with UHS modes

[Trevor Gamblin]

On 2026-03-13 10:42, Anand Moon wrote:
> Hi Trevor,
>
> On Fri, 13 Mar 2026 at 19:26, Trevor Gamblin<tgamblin@baylibre.com> wrote:
>> On 2026-03-09 07:40, Iker Pedrosa wrote:
>>> Add complete SD card controller support with UHS high-speed modes.
>>>
>>> - Enable sdhci0 controller with 4-bit bus width
>>> - Configure card detect GPIO with inversion
>>> - Connect vmmc-supply to buck4 for 3.3V card power
>>> - Connect vqmmc-supply to aldo1 for 1.8V/3.3V I/O switching
>>> - Add dual pinctrl states for voltage-dependent pin configuration
>>> - Support UHS-I SDR25, SDR50, and SDR104 modes
>>>
>>> This enables full SD card functionality including high-speed UHS modes
>>> for improved performance.
>>>
>>> Signed-off-by: Iker Pedrosa<ikerpedrosam@gmail.com>
>>> ---
>>>    arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 19 +++++++++++++++++++
>>>    1 file changed, 19 insertions(+)
>>>
>>> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>>> index 414b03f5e6480f05f5d7eeaaa0afb4e86425ae36..361135269801f436703b6f1d768c91325a52f07f 100644
>>> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>>> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>>> @@ -140,3 +140,22 @@ sd_vqmmc: aldo1 {
>>>                };
>>>        };
>>>    };
>>> +
>>> +&sdhci0 {
>>> +     pinctrl-names = "default", "state_uhs";
>>> +     pinctrl-0 = <&mmc1_cfg>;
>>> +     pinctrl-1 = <&mmc1_uhs_cfg>;
>>> +     bus-width = <4>;
>>> +     cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
>>> +     cd-inverted;
>>> +     no-mmc;
>>> +     no-sdio;
>>> +     disable-wp;
>>> +     cap-sd-highspeed;
>>> +     vmmc-supply = <&sd_vmmc>;
>>> +     vqmmc-supply = <&sd_vqmmc>;
>>> +     sd-uhs-sdr25;
>>> +     sd-uhs-sdr50;
>>> +     sd-uhs-sdr104;
>>> +     status = "okay";
>>> +};
>>>
>> Hello again,
>>
>> Thanks for doing this work. My colleagues and I have been testing this
>> on an OrangePi RV2, and also a Muse Pi Pro board (making a similar tweak
>> to this patch in k1-musepi-pro.dts). To do the testing on my end, I'm
>> applying the patch series on top of 6.19 in a Yocto BSP.
>>
>> I've been finding that I see issues with the UHS support on my side
>> (this log comes from an image built and flashed to an SD card):
>>
>>
>> [ 1.072417] sdhci-spacemit d4280000.mmc: Got CD GPIO
>> [ 1.109741] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using
>> ADMA
>> [ 1.114589] clk: Disabling unused clocks
>> [ 1.118421] PM: genpd: Disabling unused power domains
>> [ 1.123249] ALSA device list:
>> [ 1.126[ 1.129949] check access for rdinit=/init failed: -2, ignoring
>> [ 1.133284] Waiting for root device
>> PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
>> [ 1.176569] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
>> [ 1.180732] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
>> [ 1.276268] mmcblk0: recovery failed!
>> [ 1.277351] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
>> 0x800000 phys_seg 1 prio class 2
>> [ 1.286346] Buffer I/O error on dev mmcblk0, logical block 0, async page
>> read
>> [ 1.293891] mmcblk0: recovery failed!
>> [ 1.297289] I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags
>> 0x800000 phys_seg 1 prio class 2
>> [ 1.306269] Buffer I/O error on dev mmcblk0, logical block 0, async page
>> read
>> [ 1.313522] mmcblk0: unable to read partition table
>>
>>
>> At first I wondered if maybe there was an issue with the card itself,
>> but by changing the sdhci0 section to this, I'm able to read the SD just
>> fine:
>>
> I used the same example on the K1-OrangePi-RV2 DTS,
> But it’s slightly different from the one you’re working with.
> I tested on the latest  7.0-rc3.
>
>> &sdhci0 {
>>            pinctrl-names = "default";
>>            pinctrl-0 = <&mmc1_cfg>;
>>            bus-width = <4>;
>>            cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
>>            cd-inverted;
>>            no-mmc;
>>            no-sdio;
>>            disable-wp;
>>            vmmc-supply = <&sd_vmmc>;
>>            vqmmc-supply = <&sd_vqmmc>;
>>            no-1-8-v;
>>            status = "okay";
>> };
>>
> +
> +&sdhci0 {
> +       pinctrl-names = "default", "state_uhs";
> +       pinctrl-0 = <&mmc1_cfg>;
> +       pinctrl-1 = <&mmc1_uhs_cfg>;
> +       bus-width = <4>;
> +       cd-gpios = <&gpio K1_GPIO(80) GPIO_ACTIVE_HIGH>;
> +       cd-inverted;
> +       no-mmc;
> +       no-sdio;
> +       disable-wp;
> +       cap-sd-highspeed;
> +       vmmc-supply = <&sd_vmmc>;
> +       vqmmc-supply = <&sd_vqmmc>;
> +       sd-uhs-sdr25;
> +       sd-uhs-sdr50;
> +       sd-uhs-sdr104;
> +       status = "okay";
> +};
>
> Thanks
> -Anand
Yes, my mistake - with 7.0-rc3 it works for me:

[    1.071767] sdhci-spacemit d4280000.mmc: Got CD GPIO
[    1.110368] mmc0: SDHCI controller on d4280000.mmc [d4280000.mmc] using ADMA
[    1.115231] clk: Disabling unused clocks
[    1.119072] PM: genpd: Disabling unused power domains
[    1.123875] ALSA device list:
[    1.1268[    1.130718] Waiting for root device PARTUUID=e94bfdd7-a36f-4315-a480-476e2a12403d...
[    1.181158] mmc0: new UHS-I speed DDR50 SDHC card at address aaaa
[    1.185341] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[    1.198009] GPT:Primary header thinks Alt. header is not at the end of the disk.
[    1.202874] GPT:1134331 != 31116287
[    1.206388] GPT:Alternate GPT header not at the end of the disk.
[    1.212468] GPT:1134331 != 31116287
[    1.215993] GPT: Use GNU Parted to correct GPT errors.
[    1.221230]  mmcblk0: p1 p2 p3
[    1.529978] EXT4-fs (mmcblk0p3): mounted filesystem dbc76877-092e-4f8a-9f06-bf286309d8de r/w with ordered data mode. Quota mode: disabled.
[    1.540069] VFS: Mounted root (ext4 filesystem) on device 179:3.


In which case:

Tested-by: Trevor Gamblin <tgamblin@baylibre.com>

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