[PATCH v2 0/3] SHIFT 6MQ SD-card support, improved responsivness of touchscreen, and codec

[PATCH v2 0/3] SHIFT 6MQ SD-card support, improved responsivness of touchscreen, and codec

[David Heidelberg via B4 Relay]

I've tested that SD card and touchscreen works well, the codec does too,
but for complete enablement needs soundcard support which isn't fully
finished.

Signed-off-by: David Heidelberg <david@ixit.cz>
---
Changes in v2:
- Changed bias-pull-up to bias-disable for SD card detection, since the
  mechanism doesn't work, we can just save few uA. (Casey)
- Link to v1: https://lore.kernel.org/r/20260320-axolotl-misc-p1-v1-0-89c9b5ecb26e@ixit.cz

---
Alexander Martinz (1):
      arm64: dts: qcom: sdm845-shift-axolotl: Enable TFA9890 codec

Casey Connolly (2):
      arm64: dts: qcom: sdm845-shift-axolotl: Enable sdcard
      arm64: dts: qcom: sdm845-shift-axolotl: Set higher touchscreen i2c clock

 arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 59 +++++++++++++++++++++++
 1 file changed, 59 insertions(+)
---
base-commit: bd0f139e5fc11182777b81cefc3893ea508544ec
change-id: 20260320-axolotl-misc-p1-601d480c25df

Best regards,
-- 
David Heidelberg <david@ixit.cz>

[PATCH v2 1/3] arm64: dts: qcom: sdm845-shift-axolotl: Enable sdcard

[David Heidelberg via B4 Relay]

From: Casey Connolly <casey.connolly@linaro.org>

The SHIFT6mq features an sdcard slot, add it.

Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Signed-off-by: David Heidelberg <david@ixit.cz>
---
 arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 44 +++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
index 740eb22550724..c394350998c26 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
@@ -600,6 +600,24 @@ &qupv3_id_1 {
 	status = "okay";
 };
 
+&sdhc_2 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdc2_default_state &sdc2_card_det_n>;
+
+	vmmc-supply = <&vreg_l21a_2p95>;
+	vqmmc-supply = <&vreg_l13a_2p95>;
+
+	bus-width = <4>;
+	/*
+	 * Card detection is broken, but because the battery must be removed
+	 * to insert the card, we use this rather than the broken-cd property
+	 * which would just waste CPU cycles polling.
+	 */
+	non-removable;
+};
+
 &slpi_pas {
 	firmware-name = "qcom/sdm845/SHIFT/axolotl/slpi.mbn";
 
@@ -609,6 +627,32 @@ &slpi_pas {
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <81 4>;
 
+	sdc2_default_state: sdc2-default-state {
+		clk-pins {
+			pins = "sdc2_clk";
+			bias-disable;
+			drive-strength = <16>;
+		};
+
+		cmd-pins {
+			pins = "sdc2_cmd";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		data-pins {
+			pins = "sdc2_data";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+	};
+
+	sdc2_card_det_n: sd-card-det-n-state {
+		pins = "gpio126";
+		function = "gpio";
+		bias-disable;
+	};
+
 	sde_dsi_active: sde-dsi-active-state {
 		pins = "gpio6", "gpio11";
 		function = "gpio";

-- 
2.53.0

[PATCH v2 2/3] arm64: dts: qcom: sdm845-shift-axolotl: Set higher touchscreen i2c clock

[David Heidelberg via B4 Relay]

From: Casey Connolly <casey.connolly@linaro.org>

Sets a higher rate than the default for good responsiveness of
touchscreen.

Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
---
 arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
index c394350998c26..181c61e8ed748 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
@@ -432,6 +432,8 @@ &gpu_zap_shader {
 };
 
 &i2c5 {
+	clock-frequency = <400000>;
+
 	status = "okay";
 
 	touchscreen@38 {

-- 
2.53.0

[PATCH v2 3/3] arm64: dts: qcom: sdm845-shift-axolotl: Enable TFA9890 codec

[David Heidelberg via B4 Relay]

From: Alexander Martinz <amartinz@shiftphones.com>

Audio amplifier TFA9890 is present on the board.

Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
---
 arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
index 181c61e8ed748..393eb865a71d3 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
@@ -459,6 +459,19 @@ &i2c10 {
 	/* SMB1355@0x0C */
 };
 
+&i2c11 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	audio-codec@34 {
+		compatible = "nxp,tfa9890";
+		reg = <0x34>;
+		vddd-supply = <&vreg_s4a_1p8>;
+		#sound-dai-cells = <0>;
+	};
+};
+
 &ipa {
 	qcom,gsi-loader = "self";
 	memory-region = <&ipa_fw_mem>;

-- 
2.53.0

Re: [PATCH v2 1/3] arm64: dts: qcom: sdm845-shift-axolotl: Enable sdcard

[Konrad Dybcio]

On 4/1/26 6:51 PM, David Heidelberg via B4 Relay wrote:
> From: Casey Connolly <casey.connolly@linaro.org>
> 
> The SHIFT6mq features an sdcard slot, add it.
> 
> Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
> Signed-off-by: David Heidelberg <david@ixit.cz>
> ---
>  arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 44 +++++++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
> index 740eb22550724..c394350998c26 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
> @@ -600,6 +600,24 @@ &qupv3_id_1 {
>  	status = "okay";
>  };
>  
> +&sdhc_2 {
> +	status = "okay";

couple nits:

Status should be last, although the file is all over the place 

> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&sdc2_default_state &sdc2_card_det_n>;

preferably in this order

xxx
xxx-names

[...]

> +	sdc2_default_state: sdc2-default-state {
> +		clk-pins {
> +			pins = "sdc2_clk";
> +			bias-disable;
> +			drive-strength = <16>;

All other pin definitions in this file have the bias property below
drive-strength (like the card_det_n node you're adding)

other than that

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

Konrad

Re: [PATCH v2 1/3] arm64: dts: qcom: sdm845-shift-axolotl: Enable sdcard

[David Heidelberg]

On 02/04/2026 11:23, Konrad Dybcio wrote:
> On 4/1/26 6:51 PM, David Heidelberg via B4 Relay wrote:
>> From: Casey Connolly <casey.connolly@linaro.org>
>>
>> The SHIFT6mq features an sdcard slot, add it.
>>
>> Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
>> Signed-off-by: David Heidelberg <david@ixit.cz>
>> ---
>>   arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 44 +++++++++++++++++++++++
>>   1 file changed, 44 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
>> index 740eb22550724..c394350998c26 100644
>> --- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
>> +++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
>> @@ -600,6 +600,24 @@ &qupv3_id_1 {
>>   	status = "okay";
>>   };
>>   
>> +&sdhc_2 {
>> +	status = "okay";
> 
> couple nits:
> 
> Status should be last, although the file is all over the place
> 
>> +
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&sdc2_default_state &sdc2_card_det_n>;
> 
> preferably in this order
> 
> xxx
> xxx-names
> 
> [...]
> 
>> +	sdc2_default_state: sdc2-default-state {
>> +		clk-pins {
>> +			pins = "sdc2_clk";
>> +			bias-disable;
>> +			drive-strength = <16>;
> 
> All other pin definitions in this file have the bias property below
> drive-strength (like the card_det_n node you're adding)
> 
> other than that
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> 

Thanks for catching these, I completly missed that sorting is non-compliant. New 
revision sent w/ ur R-b :)

David

> Konrad

-- 
David Heidelberg