Am Freitag, 6. Juni 2025, 11:20:32 Mitteleuropäische Sommerzeit schrieb Nicolas Frattaroli:

Hi Tomeu,

On Friday, 6 June 2025 08:28:30 Central European Summer Time Tomeu Vizoso wrote:

...

From: Nicolas Frattaroli nicolas.frattaroli@collabora.com

The NPU on the ROCK5B uses the same regulator for both the sram-supply and the npu's supply. Add this regulator, and enable all the NPU bits. Also add the regulator as a domain-supply to the pd_npu power domain.

Signed-off-by: Nicolas Frattaroli nicolas.frattaroli@collabora.com Signed-off-by: Tomeu Vizoso tomeu@tomeuvizoso.net

---

arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts | 56 +++++++++++++++++++++++++ 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts index d22068475c5dc6cb885f878f3f527a66edf1ba70..49500f7cbcb14af4919a6c1997e9e53a01d84973 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts @@ -316,6 +316,28 @@ regulator-state-mem { }; }; +&i2c1 {

• pinctrl-names = "default";
• pinctrl-0 = <&i2c1m2_xfer>;
• status = "okay";
• vdd_npu_s0: regulator@42 {

• compatible = "rockchip,rk8602";
  

• reg = <0x42>;
  

• fcs,suspend-voltage-selector = <1>;
  

• regulator-name = "vdd_npu_s0";
  

• regulator-boot-on;
  

• regulator-min-microvolt = <550000>;
  

• regulator-max-microvolt = <950000>;
  

• regulator-ramp-delay = <2300>;
  

• vin-supply = <&vcc5v0_sys>;
  

• regulator-state-mem {
  

• 	regulator-off-in-suspend;
  

• };
  

• };

+};

&i2c6 { status = "okay"; @@ -440,6 +462,10 @@ &pd_gpu { domain-supply = <&vdd_gpu_s0>; }; +&pd_npu {

• domain-supply = <&vdd_npu_s0>;

+};

&pinctrl { hdmirx { hdmirx_hpd: hdmirx-5v-detection { @@ -500,6 +526,36 @@ &pwm1 { status = "okay"; }; +&rknn_core_top {

• npu-supply = <&vdd_npu_s0>;
• sram-supply = <&vdd_npu_s0>;
• status = "okay";

+};

+&rknn_core_1 {

• npu-supply = <&vdd_npu_s0>;
• sram-supply = <&vdd_npu_s0>;
• status = "okay";

+};

+&rknn_core_2 {

• npu-supply = <&vdd_npu_s0>;
• sram-supply = <&vdd_npu_s0>;
• status = "okay";

+};

+&rknn_mmu_top {

• status = "okay";

+};

+&rknn_mmu_1 {

• status = "okay";

+};

+&rknn_mmu_2 {

• status = "okay";

+};

&saradc { vref-supply = <&avcc_1v8_s0>; status = "okay";

Feel free to replace this patch with the following, if your series is based on linux-next or v6.16. It moves the enablement into the new shared ROCK 5B/5B+ dtsi, and I've added a regulator-enable-ramp-delay while I was at it because I've run into hard-to-reproduce problems relating to it before that Heiko quickly identified and fixed in his recent series[1] for basically all already present regulators. Remains to be seen if the final patch lands in that form but this should make it easier for people to try out as it means a bad luck roll for the day won't make them run into as many weird issues.

Reading that just now reminds me to point to https://lore.kernel.org/lkml/20250606190418.478633-1-heiko@sntech.de/

As Chen Yu pointed out in the reply to v2, this is more a property of the regulator IC itself, so likely should go into the driver.

So with a bit of luck after 6.16-rc1 all the fan53555 clones should use somewhat hardware-accurate enable-times.

From ff1c370a158f4340aa5dfa4ed5034e815e5371be Mon Sep 17 00:00:00 2001 From: Nicolas Frattaroli nicolas.frattaroli@collabora.com Date: Tue, 3 Jun 2025 17:03:10 +0200 Subject: [PATCH] arm64: dts: rockchip: enable NPU on ROCK 5B/+

The NPU on the ROCK5B uses the same regulator for both the sram-supply and the npu's supply. Add this regulator, and enable all the NPU bits. Also add the regulator as a domain-supply to the pd_npu power domain.

The 5B+'s regulator setup is identical to the 5B in this regard, so it goes in the shared .dtsi.

Signed-off-by: Nicolas Frattaroli nicolas.frattaroli@collabora.com

.../boot/dts/rockchip/rk3588-rock-5b.dtsi | 57 +++++++++++++++++++ 1 file changed, 57 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dtsi index 51e83f0ed809..5a20cc2555fb 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dtsi @@ -332,6 +332,29 @@ regulator-state-mem { }; }; +&i2c1 {

• pinctrl-names = "default";
• pinctrl-0 = <&i2c1m2_xfer>;
• status = "okay";
• vdd_npu_s0: regulator@42 {

• compatible = "rockchip,rk8602";
  

• reg = <0x42>;
  

• fcs,suspend-voltage-selector = <1>;
  

• regulator-name = "vdd_npu_s0";
  

• regulator-boot-on;
  

• regulator-enable-ramp-delay = <500>;
  

• regulator-min-microvolt = <550000>;
  

• regulator-max-microvolt = <950000>;
  

• regulator-ramp-delay = <2300>;
  

• vin-supply = <&vcc5v0_sys>;
  

• regulator-state-mem {
  

• 	regulator-off-in-suspend;
  

• };
  

• };

+};

&i2c3 {

I think your patch here has some other dependency still? Because in the rk3588-rock-5b.dtsi there is no i2c3 yet In torvalds' branch from _just now_ ;-) .

Heiko

status = "okay"; }; @@ -521,6 +544,10 @@ &pd_gpu { domain-supply = <&vdd_gpu_s0>; }; +&pd_npu {

• domain-supply = <&vdd_npu_s0>;

+};

&pinctrl { hdmirx { hdmirx_hpd: hdmirx-5v-detection { @@ -585,6 +612,36 @@ &pwm1 { status = "okay"; }; +&rknn_core_top {

• npu-supply = <&vdd_npu_s0>;
• sram-supply = <&vdd_npu_s0>;
• status = "okay";

+};

+&rknn_core_1 {

• npu-supply = <&vdd_npu_s0>;
• sram-supply = <&vdd_npu_s0>;
• status = "okay";

+};

+&rknn_core_2 {

• npu-supply = <&vdd_npu_s0>;
• sram-supply = <&vdd_npu_s0>;
• status = "okay";

+};

+&rknn_mmu_top {

• status = "okay";

+};

+&rknn_mmu_1 {

• status = "okay";

+};

+&rknn_mmu_2 {

• status = "okay";

+};

&saradc { vref-supply = <&avcc_1v8_s0>; status = "okay";