[PATCH v1 0/3] arm64: dts: amlogic: meson-s4: enable RTC and IR for Khadas VIM1S

[PATCH v1 0/3] arm64: dts: amlogic: meson-s4: enable RTC and IR for Khadas VIM1S

[Nick Xie]

This series adds support for the Real Time Clock (RTC) on the Amlogic 
Meson S4 (S905Y4) SoC and enables the hardware RTC and IR receiver on 
the Khadas VIM1S board.

- Patch 1 adds the internal Virtual RTC (VRTC) controller node to the 
  Meson S4 SoC dtsi.
- Patch 2 enables the I2C-attached Haoyu Micro HYM8563 RTC on the 
  Khadas VIM1S board. It also sets up aliases to ensure the hardware 
  RTC is prioritized as rtc0 over the VRTC.
- Patch 3 configures the default keymap to "rc-khadas" to support the 
  official Khadas IR remote control.

Nick Xie (3):
  arm64: dts: amlogic: meson-s4: add VRTC node
  arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable HYM8563 RTC
  arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: use rc-khadas
    keymap

 .../dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts | 16 ++++++++++++++++
 arch/arm64/boot/dts/amlogic/meson-s4.dtsi        |  5 +++++
 2 files changed, 21 insertions(+)

-- 
2.34.1


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[PATCH v1 1/3] arm64: dts: amlogic: meson-s4: add VRTC node

[Nick Xie]

Add the Virtual RTC (VRTC) controller node to the Meson S4 SoC dtsi.

Signed-off-by: Nick Xie <nick@khadas.com>
---
 arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
index 936a5c1353d15..2a6fbd5308362 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
@@ -59,6 +59,11 @@ psci {
 		method = "smc";
 	};
 
+	vrtc: rtc@fe010288 {
+		compatible = "amlogic,meson-vrtc";
+		reg = <0x0 0xfe010288 0x0 0x4>;
+	};
+
 	xtal: xtal-clk {
 		compatible = "fixed-clock";
 		clock-frequency = <24000000>;
-- 
2.34.1


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[PATCH v1 2/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable HYM8563 RTC

[Nick Xie]

The Khadas VIM1S board has an on-board Haoyu Micro HYM8563 Real Time
Clock (RTC) connected to the I2C1 bus.

Enable the I2C1 controller and add the RTC child node to support
hardware clock persistence.

Signed-off-by: Nick Xie <nick@khadas.com>
---
 .../dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index 792ab45c4c944..7314e0ab81da3 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -20,6 +20,8 @@ aliases {
 		mmc0 = &emmc; /* eMMC */
 		mmc1 = &sd; /* SD card */
 		mmc2 = &sdio; /* SDIO */
+		rtc0 = &rtc;
+		rtc1 = &vrtc;
 		serial0 = &uart_b;
 	};
 
@@ -223,6 +225,19 @@ &ethmac {
 	phy-mode = "rmii";
 };
 
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins2>;
+	clock-frequency = <100000>;
+
+	rtc: rtc@51 {
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		#clock-cells = <0>;
+	};
+};
+
 &ir {
 	status = "okay";
 	pinctrl-0 = <&remote_pins>;
-- 
2.34.1


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[PATCH v1 3/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: use rc-khadas keymap

[Nick Xie]

The Khadas VIM1S board has an onboard IR receiver.
Configure the default keymap to "rc-khadas" to support the official
Khadas IR remote control.

Signed-off-by: Nick Xie <nick@khadas.com>
---
 arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index 7314e0ab81da3..99d5df71b9cd4 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -242,6 +242,7 @@ &ir {
 	status = "okay";
 	pinctrl-0 = <&remote_pins>;
 	pinctrl-names = "default";
+	linux,rc-map-name = "rc-khadas";
 };
 
 &pwm_ef {
-- 
2.34.1


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Re: [PATCH v1 1/3] arm64: dts: amlogic: meson-s4: add VRTC node

[neil.armstrong]

On 3/27/26 10:30, Nick Xie wrote:
> Add the Virtual RTC (VRTC) controller node to the Meson S4 SoC dtsi.
> 
> Signed-off-by: Nick Xie <nick@khadas.com>
> ---
>   arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> index 936a5c1353d15..2a6fbd5308362 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> @@ -59,6 +59,11 @@ psci {
>   		method = "smc";
>   	};
>   
> +	vrtc: rtc@fe010288 {
> +		compatible = "amlogic,meson-vrtc";
> +		reg = <0x0 0xfe010288 0x0 0x4>;
> +	};
> +
>   	xtal: xtal-clk {
>   		compatible = "fixed-clock";
>   		clock-frequency = <24000000>;

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil

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Re: [PATCH v1 2/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable HYM8563 RTC

[neil.armstrong]

On 3/27/26 10:30, Nick Xie wrote:
> The Khadas VIM1S board has an on-board Haoyu Micro HYM8563 Real Time
> Clock (RTC) connected to the I2C1 bus.
> 
> Enable the I2C1 controller and add the RTC child node to support
> hardware clock persistence.
> 
> Signed-off-by: Nick Xie <nick@khadas.com>
> ---
>   .../dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> index 792ab45c4c944..7314e0ab81da3 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> @@ -20,6 +20,8 @@ aliases {
>   		mmc0 = &emmc; /* eMMC */
>   		mmc1 = &sd; /* SD card */
>   		mmc2 = &sdio; /* SDIO */
> +		rtc0 = &rtc;
> +		rtc1 = &vrtc;
>   		serial0 = &uart_b;
>   	};
>   
> @@ -223,6 +225,19 @@ &ethmac {
>   	phy-mode = "rmii";
>   };
>   
> +&i2c1 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c1_pins2>;
> +	clock-frequency = <100000>;
> +
> +	rtc: rtc@51 {
> +		compatible = "haoyu,hym8563";
> +		reg = <0x51>;
> +		#clock-cells = <0>;
> +	};
> +};
> +
>   &ir {
>   	status = "okay";
>   	pinctrl-0 = <&remote_pins>;

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil

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Re: [PATCH v1 3/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: use rc-khadas keymap

[neil.armstrong]

On 3/27/26 10:30, Nick Xie wrote:
> The Khadas VIM1S board has an onboard IR receiver.
> Configure the default keymap to "rc-khadas" to support the official
> Khadas IR remote control.
> 
> Signed-off-by: Nick Xie <nick@khadas.com>
> ---
>   arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> index 7314e0ab81da3..99d5df71b9cd4 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> @@ -242,6 +242,7 @@ &ir {
>   	status = "okay";
>   	pinctrl-0 = <&remote_pins>;
>   	pinctrl-names = "default";
> +	linux,rc-map-name = "rc-khadas";
>   };
>   
>   &pwm_ef {

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil

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Re: [PATCH v1 0/3] arm64: dts: amlogic: meson-s4: enable RTC and IR for Khadas VIM1S

[Neil Armstrong]

Hi,

On Fri, 27 Mar 2026 17:30:13 +0800, Nick Xie wrote:
> This series adds support for the Real Time Clock (RTC) on the Amlogic
> Meson S4 (S905Y4) SoC and enables the hardware RTC and IR receiver on
> the Khadas VIM1S board.
> 
> - Patch 1 adds the internal Virtual RTC (VRTC) controller node to the
>   Meson S4 SoC dtsi.
> - Patch 2 enables the I2C-attached Haoyu Micro HYM8563 RTC on the
>   Khadas VIM1S board. It also sets up aliases to ensure the hardware
>   RTC is prioritized as rtc0 over the VRTC.
> - Patch 3 configures the default keymap to "rc-khadas" to support the
>   official Khadas IR remote control.
> 
> [...]

Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (v7.1/arm64-dt)

[1/3] arm64: dts: amlogic: meson-s4: add VRTC node
      https://git.kernel.org/amlogic/c/af0f8f769f89715692ba7abc4716ecb7aa9af028
[2/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable HYM8563 RTC
      https://git.kernel.org/amlogic/c/3da3598f65d00f72a17a16c171ba52897d8e96a6
[3/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: use rc-khadas keymap
      https://git.kernel.org/amlogic/c/c15edbda012eff7cca4c6c6bfedc04bde5e8adf6

These changes has been applied on the intermediate git tree [1].

The v7.1/arm64-dt branch will then be sent via a formal Pull Request to the Linux SoC maintainers
for inclusion in their intermediate git branches in order to be sent to Linus during
the next merge window, or sooner if it's a set of fixes.

In the cases of fixes, those will be merged in the current release candidate
kernel and as soon they appear on the Linux master branch they will be
backported to the previous Stable and Long-Stable kernels [2].

The intermediate git branches are merged daily in the linux-next tree [3],
people are encouraged testing these pre-release kernels and report issues on the
relevant mailing-lists.

If problems are discovered on those changes, please submit a signed-off-by revert
patch followed by a corrective changeset.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
[3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

-- 
Neil


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