[PATCH 0/5] Fix volume up and add RTC, PRNG, UART in xiaomi-ginkgo

[PATCH 0/5] Fix volume up and add RTC, PRNG, UART in xiaomi-ginkgo

[Biswapriyo Nath via B4 Relay]

The patch series fixes an issue and adds some components.

Changes:
- Fix volume up button gpio and power source in xiaomi ginkgo.
- Enable RTC from pm6125 in xiaomi ginkgo.
- Add prng node in sm6125.
- Add debug uart node in sm6125.
- Enable debug uart in xiaomi ginkgo.

Depends on:
[1] https://lore.kernel.org/linux-arm-msm/20260116-xiaomi-willow-v2-0-4694feb70cdb@mainlining.org/

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
---
Biswapriyo Nath (5):
      arm64: dts: qcom: sm6125-xiaomi-ginkgo: Fix volume up button
      arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable RTC
      arm64: dts: qcom: sm6125: Add PRNG node
      arm64: dts: qcom: sm6125: Add debug UART node
      arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable debug UART

 .../boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi | 22 ++++++++++++++++---
 arch/arm64/boot/dts/qcom/sm6125.dtsi               | 25 ++++++++++++++++++++++
 2 files changed, 44 insertions(+), 3 deletions(-)
---
base-commit: e5d16f0daba655b8c63032f7b0ae1f21881d821f
change-id: 20260118-xiaomi-ginkgo-features-6824e10fec21
prerequisite-message-id: <20260116-xiaomi-willow-v2-0-4694feb70cdb@mainlining.org>
prerequisite-patch-id: 97a500cccd7099f84f02d24b79f9632264ff0919
prerequisite-patch-id: a76649864084c6349d5bbd425c84489621e3d950
prerequisite-patch-id: 88844031b714eecc8185b968927ece52795237cd
prerequisite-patch-id: 7f01d4e3dafb4911244d6bf03db9ac03395f8609
prerequisite-patch-id: c339d93729aee842cce74ba1316f5b5c8d01d04e
prerequisite-patch-id: daad11c94235247984631a78b2c2cda74f8af5bf
prerequisite-patch-id: 816740927f2e464864884584e6af596b038074dd

Best regards,
-- 
Biswapriyo Nath <nathbappai@gmail.com>

[PATCH 1/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Fix volume up button

[Biswapriyo Nath via B4 Relay]

From: Biswapriyo Nath <nathbappai@gmail.com>

gpio6 in pm6125 is used for EMMC and UFS thermal monitoring. It is
changed to the correct gpio for volume up button.

Fixes: 9b1a6c925c88 ("arm64: dts: qcom: sm6125: Initial support for xiaomi-ginkgo")

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
---
 arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
index 2605d0c94..6e0333378 100644
--- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
@@ -85,7 +85,7 @@ gpio-keys {
 
 		key-volume-up {
 			label = "Volume Up";
-			gpios = <&pm6125_gpios 6 GPIO_ACTIVE_LOW>;
+			gpios = <&pm6125_gpios 5 GPIO_ACTIVE_LOW>;
 			linux,code = <KEY_VOLUMEUP>;
 			debounce-interval = <15>;
 			linux,can-disable;
@@ -96,9 +96,9 @@ key-volume-up {
 
 &pm6125_gpios {
 	vol_up_n: vol-up-n-state {
-		pins = "gpio6";
+		pins = "gpio5";
 		function = "normal";
-		power-source = <1>;
+		power-source = <0>;
 		bias-pull-up;
 		input-enable;
 	};

-- 
2.52.0

[PATCH 2/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable RTC

[Biswapriyo Nath via B4 Relay]

From: Biswapriyo Nath <nathbappai@gmail.com>

Enable the real time clock from pm6125.

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
---
 arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
index 6e0333378..673bc92c7 100644
--- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
@@ -111,6 +111,10 @@ &hsusb_phy1 {
 	status = "okay";
 };
 
+&pm6125_rtc {
+	status = "okay";
+};
+
 &pon_pwrkey {
 	status = "okay";
 };

-- 
2.52.0

[PATCH 3/5] arm64: dts: qcom: sm6125: Add PRNG node

[Biswapriyo Nath via B4 Relay]

From: Biswapriyo Nath <nathbappai@gmail.com>

Add a node for the PRNG to enable hardware accelerated pseudo random
number generation.

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
---
 arch/arm64/boot/dts/qcom/sm6125.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6125.dtsi b/arch/arm64/boot/dts/qcom/sm6125.dtsi
index 8f2d65543..e60d4d74c 100644
--- a/arch/arm64/boot/dts/qcom/sm6125.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6125.dtsi
@@ -686,6 +686,13 @@ hsusb_phy1: phy@1613000 {
 			status = "disabled";
 		};
 
+		rng: rng@1b53000 {
+			compatible = "qcom,prng-ee";
+			reg = <0x01b53000 0x1000>;
+			clocks = <&gcc GCC_PRNG_AHB_CLK>;
+			clock-names = "core";
+		};
+
 		spmi_bus: spmi@1c40000 {
 			compatible = "qcom,spmi-pmic-arb";
 			reg = <0x01c40000 0x1100>,

-- 
2.52.0

[PATCH 4/5] arm64: dts: qcom: sm6125: Add debug UART node

[Biswapriyo Nath via B4 Relay]

From: Biswapriyo Nath <nathbappai@gmail.com>

qup0 on sm6125 has 6 SEs and SE4 is used as debug uart. The uart node
and the associated pinctrl are added here.

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
---
 arch/arm64/boot/dts/qcom/sm6125.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6125.dtsi b/arch/arm64/boot/dts/qcom/sm6125.dtsi
index e60d4d74c..0540fb865 100644
--- a/arch/arm64/boot/dts/qcom/sm6125.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6125.dtsi
@@ -661,6 +661,13 @@ qup_spi9_sleep: qup-spi9-sleep-state {
 				drive-strength = <6>;
 				bias-disable;
 			};
+
+			qup_uart4_default: qup-uart4-default-state {
+				pins = "gpio16", "gpio17";
+				function = "qup04";
+				drive-strength = <2>;
+				bias-disable;
+			};
 		};
 
 		gcc: clock-controller@1400000 {
@@ -985,6 +992,17 @@ i2c4: i2c@4a90000 {
 				#size-cells = <0>;
 				status = "disabled";
 			};
+
+			uart4: serial@4a90000 {
+				compatible = "qcom,geni-debug-uart";
+				reg = <0x04a90000 0x4000>;
+				clocks = <&gcc GCC_QUPV3_WRAP0_S4_CLK>;
+				clock-names = "se";
+				interrupts = <GIC_SPI 331 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-0 = <&qup_uart4_default>;
+				pinctrl-names = "default";
+				status = "disabled";
+			};
 		};
 
 		gpi_dma1: dma-controller@4c00000 {

-- 
2.52.0

[PATCH 5/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable debug UART

[Biswapriyo Nath via B4 Relay]

From: Biswapriyo Nath <nathbappai@gmail.com>

Enable the debug uart node in xiaomi ginkgo exposed as test points.

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
---
 arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
index 673bc92c7..18aecd9ff 100644
--- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi
@@ -26,6 +26,10 @@ / {
 
 	qcom,msm-id = <QCOM_ID_SM6125 0x10000>;
 
+	aliases {
+		serial0 = &uart4;
+	};
+
 	chosen {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -124,6 +128,10 @@ &pon_resin {
 	status = "okay";
 };
 
+&qupv3_id_0 {
+	status = "okay";
+};
+
 &rpm_requests {
 	regulators-0 {
 		compatible = "qcom,rpm-pm6125-regulators";
@@ -300,6 +308,10 @@ &tlmm {
 	gpio-reserved-ranges = <0 4>, <30 4>;
 };
 
+&uart4 {
+	status = "okay";
+};
+
 &usb3 {
 	status = "okay";
 };

-- 
2.52.0

Re: [PATCH 1/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Fix volume up button

[Konrad Dybcio]

On 1/19/26 4:13 PM, Biswapriyo Nath via B4 Relay wrote:
> From: Biswapriyo Nath <nathbappai@gmail.com>
> 
> gpio6 in pm6125 is used for EMMC and UFS thermal monitoring. It is
> changed to the correct gpio for volume up button.
> 
> Fixes: 9b1a6c925c88 ("arm64: dts: qcom: sm6125: Initial support for xiaomi-ginkgo")
> 

For future submissions, please remove the newline you kept before fixes
and s-o-b, so that the "tags section" is contiguous

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad

Re: [PATCH 4/5] arm64: dts: qcom: sm6125: Add debug UART node

[Konrad Dybcio]

On 1/19/26 4:13 PM, Biswapriyo Nath via B4 Relay wrote:
> From: Biswapriyo Nath <nathbappai@gmail.com>
> 
> qup0 on sm6125 has 6 SEs and SE4 is used as debug uart. The uart node
> and the associated pinctrl are added here.
> 
> Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad

Re: [PATCH 5/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable debug UART

[Dmitry Baryshkov]

On Mon, Jan 19, 2026 at 03:13:07PM +0000, Biswapriyo Nath via B4 Relay wrote:
> From: Biswapriyo Nath <nathbappai@gmail.com>
> 
> Enable the debug uart node in xiaomi ginkgo exposed as test points.
> 
> Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
> ---
>  arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo-common.dtsi | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry

Re: [PATCH 2/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable RTC

[Konrad Dybcio]

On 1/19/26 4:13 PM, Biswapriyo Nath via B4 Relay wrote:
> From: Biswapriyo Nath <nathbappai@gmail.com>
> 
> Enable the real time clock from pm6125.
> 
> Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
> ---

Let's remove the status=disabled in pm6125.dtsi instead

Konrad

Re: [PATCH 5/5] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Enable debug UART

[Konrad Dybcio]

On 1/19/26 4:13 PM, Biswapriyo Nath via B4 Relay wrote:
> From: Biswapriyo Nath <nathbappai@gmail.com>
> 
> Enable the debug uart node in xiaomi ginkgo exposed as test points.
> 
> Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad