[PATCH v2] riscv: dts: starfive: Set EMMC vqmmc maximum voltage to 3.3V on JH7110 boards
Currently, for JH7110 boards with EMMC slot, vqmmc voltage for EMMC is fixed to 1.8V, while the spec needs it to be 3.3V on low speed mode and should support switching to 1.8V when using higher speed mode. Since there are no other peripherals using the same voltage source of EMMC's vqmmc(ALDO4) on every board currently supported by mainline kernel, regulator-max-microvolt of ALDO4 should be set to 3.3V.
Cc: stable@vger.kernel.org Signed-off-by: Shengyu Qu wiagn233@outlook.com Fixes: 7dafcfa79cc9 ("riscv: dts: starfive: enable DCDC1&ALDO4 node in axp15060") --- arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi index 37b4c294ffcc..c7a549ec7452 100644 --- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi @@ -244,7 +244,7 @@ emmc_vdd: aldo4 { regulator-boot-on; regulator-always-on; regulator-min-microvolt = <1800000>; - regulator-max-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; regulator-name = "emmc_vdd"; }; };
I forgot to add change note. This version of patch only changed fixes info to the commit Conor advised.
Best regards, Shengyu
在 2024/6/12 18:33, Shengyu Qu 写道:
Currently, for JH7110 boards with EMMC slot, vqmmc voltage for EMMC is fixed to 1.8V, while the spec needs it to be 3.3V on low speed mode and should support switching to 1.8V when using higher speed mode. Since there are no other peripherals using the same voltage source of EMMC's vqmmc(ALDO4) on every board currently supported by mainline kernel, regulator-max-microvolt of ALDO4 should be set to 3.3V.
Cc: stable@vger.kernel.org Signed-off-by: Shengyu Qu wiagn233@outlook.com Fixes: 7dafcfa79cc9 ("riscv: dts: starfive: enable DCDC1&ALDO4 node in axp15060")
arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi index 37b4c294ffcc..c7a549ec7452 100644 --- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi @@ -244,7 +244,7 @@ emmc_vdd: aldo4 { regulator-boot-on; regulator-always-on; regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-max-microvolt = <3300000>; regulator-name = "emmc_vdd"; };
On Wed, Jun 12, 2024 at 06:33:31PM +0800, Shengyu Qu wrote:
Currently, for JH7110 boards with EMMC slot, vqmmc voltage for EMMC is fixed to 1.8V, while the spec needs it to be 3.3V on low speed mode and should support switching to 1.8V when using higher speed mode. Since there are no other peripherals using the same voltage source of EMMC's vqmmc(ALDO4) on every board currently supported by mainline kernel,
I should've asked last time around, does the star64 also support 3.3 volts?
regulator-max-microvolt of ALDO4 should be set to 3.3V.
Cc: stable@vger.kernel.org Signed-off-by: Shengyu Qu wiagn233@outlook.com Fixes: 7dafcfa79cc9 ("riscv: dts: starfive: enable DCDC1&ALDO4 node in axp15060")
arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi index 37b4c294ffcc..c7a549ec7452 100644 --- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi @@ -244,7 +244,7 @@ emmc_vdd: aldo4 { regulator-boot-on; regulator-always-on; regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-max-microvolt = <3300000>; regulator-name = "emmc_vdd"; };-- 2.39.2
Hi Conor,
From star64's schematic, I didn't see any difference between star64 and vf2's emmc vqmmc source design and aldo4 is not shared with other peripheral at all. And this patch is tested on my vf2 with no problem at all. So I think it is supported.
Best regards, Shengyu
在 2024/6/13 0:18, Conor Dooley 写道:
On Wed, Jun 12, 2024 at 06:33:31PM +0800, Shengyu Qu wrote:
Currently, for JH7110 boards with EMMC slot, vqmmc voltage for EMMC is fixed to 1.8V, while the spec needs it to be 3.3V on low speed mode and should support switching to 1.8V when using higher speed mode. Since there are no other peripherals using the same voltage source of EMMC's vqmmc(ALDO4) on every board currently supported by mainline kernel,
I should've asked last time around, does the star64 also support 3.3 volts?
regulator-max-microvolt of ALDO4 should be set to 3.3V.
Cc: stable@vger.kernel.org Signed-off-by: Shengyu Qu wiagn233@outlook.com Fixes: 7dafcfa79cc9 ("riscv: dts: starfive: enable DCDC1&ALDO4 node in axp15060")
arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi index 37b4c294ffcc..c7a549ec7452 100644 --- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi @@ -244,7 +244,7 @@ emmc_vdd: aldo4 { regulator-boot-on; regulator-always-on; regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-max-microvolt = <3300000>; regulator-name = "emmc_vdd"; };-- 2.39.2
From: Conor Dooley conor.dooley@microchip.com
On Wed, 12 Jun 2024 18:33:31 +0800, Shengyu Qu wrote:
Currently, for JH7110 boards with EMMC slot, vqmmc voltage for EMMC is fixed to 1.8V, while the spec needs it to be 3.3V on low speed mode and should support switching to 1.8V when using higher speed mode. Since there are no other peripherals using the same voltage source of EMMC's vqmmc(ALDO4) on every board currently supported by mainline kernel, regulator-max-microvolt of ALDO4 should be set to 3.3V.
[...]
Applied to riscv-dt-fixes, thanks!
[1/1] riscv: dts: starfive: Set EMMC vqmmc maximum voltage to 3.3V on JH7110 boards https://git.kernel.org/conor/c/3c1f81a1b554
I was kinda holding out for a response for Emil, but I've applied this cos I'd like to get a fixes PR sent out later this week.
Thanks, Conor.
linux-stable-mirror@lists.linaro.org
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Conor Dooley -
Shengyu Qu