[PATCH v2 0/5] SDM670 LPASS LPI pin controller support

[PATCH v2 0/5] SDM670 LPASS LPI pin controller support

[Richard Acayan]

This adds support for the LPASS LPI pin controller on SDM670, which
controls some audio pins (e.g. TDM or PDM busses). The ADSP patches are
not sent yet.

This series depends on LMh because the LPI devicetree node is next to
the LMh devicetree node (NOPUSH: link to LMh).

Changes since v1 (https://lore.kernel.org/r/20260210021109.11906-1-mailingradian@gmail.com):
- add LPASS in dt-bindings patch subject (2/5)
- change pin names (2/5, 3/5, 4/5)
- add reviewed-by from Krzysztof (2/5)
- specify gpio-reserved-ranges (1/5, 5/5)

Richard Acayan (5):
  dt-bindings: qcom: lpass-lpi-common: add reserved GPIOs property
  dt-bindings: pinctrl: qcom: Add SDM670 LPASS LPI pinctrl
  pinctrl: qcom: add sdm670 lpi tlmm
  arm64: dts: qcom: sdm670: add lpi pinctrl
  arm64: dts: qcom: sdm670-google: add reserved lpi gpios

 .../pinctrl/qcom,lpass-lpi-common.yaml        |   6 +
 .../qcom,sdm670-lpass-lpi-pinctrl.yaml        |  81 +++++++++
 .../boot/dts/qcom/sdm670-google-common.dtsi   |   4 +
 arch/arm64/boot/dts/qcom/sdm670.dtsi          |  73 ++++++++
 drivers/pinctrl/qcom/Kconfig                  |  10 ++
 drivers/pinctrl/qcom/Makefile                 |   1 +
 .../pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c   | 166 ++++++++++++++++++
 7 files changed, 341 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml
 create mode 100644 drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c

-- 
2.53.0

[PATCH v2 1/5] dt-bindings: qcom: lpass-lpi-common: add reserved GPIOs property

[Richard Acayan]

There can be reserved GPIOs on the LPASS LPI pin controller to possibly
control sensors. Add the property for reserved GPIOs so they can be
avoided appropriately.

Adapted from the same entry in qcom,tlmm-common.yaml.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 .../devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml  | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml
index 619341dd637c..0c3fa5d597e0 100644
--- a/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml
@@ -27,6 +27,12 @@ properties:
   gpio-ranges:
     maxItems: 1
 
+  gpio-reserved-ranges:
+    description:
+      Pins can be reserved for trusted applications or for LPASS, thereby
+      inaccessible from the OS. This property can be used to mark the pins
+      which resources should not be accessed by the OS.
+
 required:
   - gpio-controller
   - "#gpio-cells"
-- 
2.53.0

Re: [PATCH v2 1/5] dt-bindings: qcom: lpass-lpi-common: add reserved GPIOs property

[Krzysztof Kozlowski]

On Mon, Mar 09, 2026 at 09:24:42PM -0400, Richard Acayan wrote:
> There can be reserved GPIOs on the LPASS LPI pin controller to possibly
> control sensors. Add the property for reserved GPIOs so they can be
> avoided appropriately.
> 
> Adapted from the same entry in qcom,tlmm-common.yaml.
> 
> Signed-off-by: Richard Acayan <mailingradian@gmail.com>
> ---
>  .../devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml  | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml
> index 619341dd637c..0c3fa5d597e0 100644
> --- a/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,lpass-lpi-common.yaml
> @@ -27,6 +27,12 @@ properties:
>    gpio-ranges:
>      maxItems: 1
>  
> +  gpio-reserved-ranges:
> +    description:
> +      Pins can be reserved for trusted applications or for LPASS, thereby
> +      inaccessible from the OS. This property can be used to mark the pins
> +      which resources should not be accessed by the OS.

minItems: 1
maxItems: 30

I guess to have somoe sort reasonable limit.

Best regards,
Krzysztof

[PATCH v2 2/5] dt-bindings: pinctrl: qcom: Add SDM670 LPASS LPI pinctrl

[Richard Acayan]

Add the pin controller for the audio Low-Power Island (LPI) on SDM670.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 .../qcom,sdm670-lpass-lpi-pinctrl.yaml        | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml
new file mode 100644
index 000000000000..c76ad70e6b9f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm SDM670 SoC LPASS LPI TLMM
+
+maintainers:
+  - Richard Acayan <mailingradian@gmail.com>
+
+description:
+  Top Level Mode Multiplexer pin controller in the Low Power Audio SubSystem
+  (LPASS) Low Power Island (LPI) of Qualcomm SDM670 SoC.
+
+properties:
+  compatible:
+    const: qcom,sdm670-lpass-lpi-pinctrl
+
+  reg:
+    items:
+      - description: LPASS LPI TLMM Control and Status registers
+
+patternProperties:
+  "-state$":
+    oneOf:
+      - $ref: "#/$defs/qcom-sdm670-lpass-state"
+      - patternProperties:
+          "-pins$":
+            $ref: "#/$defs/qcom-sdm670-lpass-state"
+        additionalProperties: false
+
+$defs:
+  qcom-sdm670-lpass-state:
+    type: object
+    description:
+      Pinctrl node's client devices use subnodes for desired pin configuration.
+      Client device subnodes use below standard properties.
+    $ref: qcom,lpass-lpi-common.yaml#/$defs/qcom-tlmm-state
+    unevaluatedProperties: false
+
+    properties:
+      pins:
+        description:
+          List of gpio pins affected by the properties specified in this
+          subnode.
+        items:
+          pattern: "^gpio([0-9]|1[0-9]|2[0-9]|3[0-1])$"
+
+      function:
+        enum: [ gpio, comp_rx, dmic1_clk, dmic1_data, dmic2_clk, dmic2_data,
+                i2s1_clk, i2s_data, i2s_ws, lpi_cdc_rst, mclk0, pdm_rx,
+                pdm_sync, pdm_tx, slimbus_clk ]
+        description:
+          Specify the alternative function to be configured for the specified
+          pins.
+
+allOf:
+  - $ref: qcom,lpass-lpi-common.yaml#
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    lpi_tlmm: pinctrl@62b40000 {
+        compatible = "qcom,sdm670-lpass-lpi-pinctrl";
+        reg = <0x62b40000 0x20000>;
+        gpio-controller;
+        #gpio-cells = <2>;
+        gpio-ranges = <&lpi_tlmm 0 0 32>;
+
+        cdc_comp_default: cdc-comp-default-state {
+            pins = "gpio22", "gpio24";
+            function = "comp_rx";
+            drive-strength = <4>;
+        };
+    };
-- 
2.53.0

Re: [PATCH v2 2/5] dt-bindings: pinctrl: qcom: Add SDM670 LPASS LPI pinctrl

[Krzysztof Kozlowski]

On Mon, Mar 09, 2026 at 09:24:43PM -0400, Richard Acayan wrote:
> Add the pin controller for the audio Low-Power Island (LPI) on SDM670.
> 
> Signed-off-by: Richard Acayan <mailingradian@gmail.com>
> ---
>  .../qcom,sdm670-lpass-lpi-pinctrl.yaml        | 81 +++++++++++++++++++
>  1 file changed, 81 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,sdm670-lpass-lpi-pinctrl.yaml

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof

[PATCH v2 3/5] pinctrl: qcom: add sdm670 lpi tlmm

[Richard Acayan]

The Snapdragon 670 has an Low-Power Island (LPI) TLMM for configuring
pins related to audio. Add the driver for this.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 drivers/pinctrl/qcom/Kconfig                  |  10 ++
 drivers/pinctrl/qcom/Makefile                 |   1 +
 .../pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c   | 166 ++++++++++++++++++
 3 files changed, 177 insertions(+)
 create mode 100644 drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c

diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index f56592411cf6..eb8ed3effd58 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -89,6 +89,16 @@ config PINCTRL_SM4250_LPASS_LPI
 	  Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
 	  (Low Power Island) found on the Qualcomm Technologies Inc SM4250 platform.
 
+config PINCTRL_SDM670_LPASS_LPI
+	tristate "Qualcomm Technologies Inc SDM670 LPASS LPI pin controller driver"
+	depends on GPIOLIB
+	depends on ARM64 || COMPILE_TEST
+	depends on PINCTRL_LPASS_LPI
+	help
+	  This is the pinctrl, pinmux, pinconf and gpiolib driver for the
+	  Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
+	  (Low Power Island) found on the Qualcomm Technologies Inc SDM670 platform.
+
 config PINCTRL_SM6115_LPASS_LPI
 	tristate "Qualcomm Technologies Inc SM6115 LPASS LPI pin controller driver"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index 4269d1781015..ed2127d26912 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_PINCTRL_SC8280XP)	+= pinctrl-sc8280xp.o
 obj-$(CONFIG_PINCTRL_SDM660)   += pinctrl-sdm660.o
 obj-$(CONFIG_PINCTRL_SDM660_LPASS_LPI) += pinctrl-sdm660-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_SDM670) += pinctrl-sdm670.o
+obj-$(CONFIG_PINCTRL_SDM670_LPASS_LPI) += pinctrl-sdm670-lpass-lpi.o
 obj-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o
 obj-$(CONFIG_PINCTRL_SDX55) += pinctrl-sdx55.o
 obj-$(CONFIG_PINCTRL_SDX65) += pinctrl-sdx65.o
diff --git a/drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c
new file mode 100644
index 000000000000..6270c6d09c22
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-sdm670-lpass-lpi.c
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023-2026, Richard Acayan. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+
+#include "pinctrl-lpass-lpi.h"
+
+enum lpass_lpi_functions {
+	LPI_MUX_comp_rx,
+	LPI_MUX_dmic1_clk,
+	LPI_MUX_dmic1_data,
+	LPI_MUX_dmic2_clk,
+	LPI_MUX_dmic2_data,
+	LPI_MUX_i2s1_clk,
+	LPI_MUX_i2s1_data,
+	LPI_MUX_i2s1_ws,
+	LPI_MUX_lpi_cdc_rst,
+	LPI_MUX_mclk0,
+	LPI_MUX_pdm_rx,
+	LPI_MUX_pdm_sync,
+	LPI_MUX_pdm_tx,
+	LPI_MUX_slimbus_clk,
+	LPI_MUX_gpio,
+	LPI_MUX__,
+};
+
+static const struct pinctrl_pin_desc sdm670_lpi_pinctrl_pins[] = {
+	PINCTRL_PIN(0, "gpio0"),
+	PINCTRL_PIN(1, "gpio1"),
+	PINCTRL_PIN(2, "gpio2"),
+	PINCTRL_PIN(3, "gpio3"),
+	PINCTRL_PIN(4, "gpio4"),
+	PINCTRL_PIN(5, "gpio5"),
+	PINCTRL_PIN(6, "gpio6"),
+	PINCTRL_PIN(7, "gpio7"),
+	PINCTRL_PIN(8, "gpio8"),
+	PINCTRL_PIN(9, "gpio9"),
+	PINCTRL_PIN(10, "gpio10"),
+	PINCTRL_PIN(11, "gpio11"),
+	PINCTRL_PIN(12, "gpio12"),
+	PINCTRL_PIN(13, "gpio13"),
+	PINCTRL_PIN(14, "gpio14"),
+	PINCTRL_PIN(15, "gpio15"),
+	PINCTRL_PIN(16, "gpio16"),
+	PINCTRL_PIN(17, "gpio17"),
+	PINCTRL_PIN(18, "gpio18"),
+	PINCTRL_PIN(19, "gpio19"),
+	PINCTRL_PIN(20, "gpio20"),
+	PINCTRL_PIN(21, "gpio21"),
+	PINCTRL_PIN(22, "gpio22"),
+	PINCTRL_PIN(23, "gpio23"),
+	PINCTRL_PIN(24, "gpio24"),
+	PINCTRL_PIN(25, "gpio25"),
+	PINCTRL_PIN(26, "gpio26"),
+	PINCTRL_PIN(27, "gpio27"),
+	PINCTRL_PIN(28, "gpio28"),
+	PINCTRL_PIN(29, "gpio29"),
+	PINCTRL_PIN(30, "gpio30"),
+	PINCTRL_PIN(31, "gpio31"),
+};
+
+static const char * const comp_rx_groups[] = { "gpio22", "gpio24" };
+static const char * const dmic1_clk_groups[] = { "gpio26" };
+static const char * const dmic1_data_groups[] = { "gpio27" };
+static const char * const dmic2_clk_groups[] = { "gpio28" };
+static const char * const dmic2_data_groups[] = { "gpio29" };
+static const char * const i2s1_clk_groups[] = { "gpio8" };
+static const char * const i2s1_ws_groups[] = { "gpio9" };
+static const char * const i2s1_data_groups[] = { "gpio10", "gpio11" };
+static const char * const lpi_cdc_rst_groups[] = { "gpio29" };
+static const char * const mclk0_groups[] = { "gpio19" };
+static const char * const pdm_rx_groups[] = { "gpio21", "gpio23", "gpio25" };
+static const char * const pdm_sync_groups[] = { "gpio19" };
+static const char * const pdm_tx_groups[] = { "gpio20" };
+static const char * const slimbus_clk_groups[] = { "gpio18" };
+
+const struct lpi_pingroup sdm670_lpi_pinctrl_groups[] = {
+	LPI_PINGROUP(0, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(1, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(2, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(3, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(4, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(5, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(6, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(7, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(8, LPI_NO_SLEW, _, _, i2s1_clk, _),
+	LPI_PINGROUP(9, LPI_NO_SLEW, _, _, i2s1_ws, _),
+	LPI_PINGROUP(10, LPI_NO_SLEW, _, _, _, i2s1_data),
+	LPI_PINGROUP(11, LPI_NO_SLEW, _, i2s1_data, _, _),
+	LPI_PINGROUP(12, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(13, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(14, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(15, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(16, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(17, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(18, LPI_NO_SLEW, _, slimbus_clk, _, _),
+	LPI_PINGROUP(19, LPI_NO_SLEW, mclk0, _, pdm_sync, _),
+	LPI_PINGROUP(20, LPI_NO_SLEW, _, pdm_tx, _, _),
+	LPI_PINGROUP(21, LPI_NO_SLEW, _, pdm_rx, _, _),
+	LPI_PINGROUP(22, LPI_NO_SLEW, _, comp_rx, _, _),
+	LPI_PINGROUP(23, LPI_NO_SLEW, pdm_rx, _, _, _),
+	LPI_PINGROUP(24, LPI_NO_SLEW, comp_rx, _, _, _),
+	LPI_PINGROUP(25, LPI_NO_SLEW, pdm_rx, _, _, _),
+	LPI_PINGROUP(26, LPI_NO_SLEW, dmic1_clk, _, _, _),
+	LPI_PINGROUP(27, LPI_NO_SLEW, dmic1_data, _, _, _),
+	LPI_PINGROUP(28, LPI_NO_SLEW, dmic2_clk, _, _, _),
+	LPI_PINGROUP(29, LPI_NO_SLEW, dmic2_data, lpi_cdc_rst, _, _),
+	LPI_PINGROUP(30, LPI_NO_SLEW, _, _, _, _),
+	LPI_PINGROUP(31, LPI_NO_SLEW, _, _, _, _),
+};
+
+const struct lpi_function sdm670_lpi_pinctrl_functions[] = {
+	LPI_FUNCTION(comp_rx),
+	LPI_FUNCTION(dmic1_clk),
+	LPI_FUNCTION(dmic1_data),
+	LPI_FUNCTION(dmic2_clk),
+	LPI_FUNCTION(dmic2_data),
+	LPI_FUNCTION(i2s1_clk),
+	LPI_FUNCTION(i2s1_data),
+	LPI_FUNCTION(i2s1_ws),
+	LPI_FUNCTION(lpi_cdc_rst),
+	LPI_FUNCTION(mclk0),
+	LPI_FUNCTION(pdm_tx),
+	LPI_FUNCTION(pdm_rx),
+	LPI_FUNCTION(pdm_sync),
+	LPI_FUNCTION(slimbus_clk),
+};
+
+static const struct lpi_pinctrl_variant_data sdm670_lpi_pinctrl_data = {
+	.pins = sdm670_lpi_pinctrl_pins,
+	.npins = ARRAY_SIZE(sdm670_lpi_pinctrl_pins),
+	.groups = sdm670_lpi_pinctrl_groups,
+	.ngroups = ARRAY_SIZE(sdm670_lpi_pinctrl_groups),
+	.functions = sdm670_lpi_pinctrl_functions,
+	.nfunctions = ARRAY_SIZE(sdm670_lpi_pinctrl_functions),
+	.flags = LPI_FLAG_SLEW_RATE_SAME_REG,
+};
+
+static const struct of_device_id sdm670_lpi_pinctrl_of_match[] = {
+	{
+		.compatible = "qcom,sdm670-lpass-lpi-pinctrl",
+		.data = &sdm670_lpi_pinctrl_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sdm670_lpi_pinctrl_of_match);
+
+static struct platform_driver sdm670_lpi_pinctrl_driver = {
+	.driver = {
+		.name = "qcom-sdm670-lpass-lpi-pinctrl",
+		.of_match_table = sdm670_lpi_pinctrl_of_match,
+	},
+	.probe = lpi_pinctrl_probe,
+	.remove = lpi_pinctrl_remove,
+};
+module_platform_driver(sdm670_lpi_pinctrl_driver);
+
+MODULE_AUTHOR("Richard Acayan <mailingradian@gmail.com>");
+MODULE_DESCRIPTION("QTI SDM670 LPI GPIO pin control driver");
+MODULE_LICENSE("GPL");
-- 
2.53.0

Re: [PATCH v2 3/5] pinctrl: qcom: add sdm670 lpi tlmm

[Konrad Dybcio]

On 3/10/26 2:24 AM, Richard Acayan wrote:
> The Snapdragon 670 has an Low-Power Island (LPI) TLMM for configuring
> pins related to audio. Add the driver for this.
> 
> Signed-off-by: Richard Acayan <mailingradian@gmail.com>
> ---

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

Konrad

[PATCH v2 4/5] arm64: dts: qcom: sdm670: add lpi pinctrl

[Richard Acayan]

The Snapdragon 670 has a separate TLMM for audio pins. Add the device
node for it.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 arch/arm64/boot/dts/qcom/sdm670.dtsi | 73 ++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm670.dtsi b/arch/arm64/boot/dts/qcom/sdm670.dtsi
index 4879d29d63c2..e21d42483378 100644
--- a/arch/arm64/boot/dts/qcom/sdm670.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm670.dtsi
@@ -2346,6 +2346,79 @@ lmh_cluster0: lmh@17d78800 {
 			interrupt-controller;
 			#interrupt-cells = <1>;
 		};
+
+		lpi_tlmm: pinctrl@62b40000 {
+			compatible = "qcom,sdm670-lpass-lpi-pinctrl";
+			reg = <0 0x62b40000 0 0x20000>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&lpi_tlmm 0 0 32>;
+
+			cdc_pdm_default: cdc-pdm-default-state {
+				clk-pins {
+					pins = "gpio18";
+					function = "slimbus_clk";
+					drive-strength = <4>;
+					output-low;
+				};
+
+				sync-pins {
+					pins = "gpio19";
+					function = "pdm_sync";
+					drive-strength = <4>;
+					output-low;
+				};
+
+				tx-pins {
+					pins = "gpio20";
+					function = "pdm_tx";
+					drive-strength = <8>;
+				};
+
+				rx-pins {
+					pins = "gpio21", "gpio23", "gpio25";
+					function = "pdm_rx";
+					drive-strength = <4>;
+					output-low;
+				};
+			};
+
+			cdc_comp_default: cdc-comp-default-state {
+				pins = "gpio22", "gpio24";
+				function = "comp_rx";
+				drive-strength = <4>;
+			};
+
+			cdc_dmic_default: cdc-dmic-default-state {
+				clk1-pins {
+					pins = "gpio26";
+					function = "dmic1_clk";
+					drive-strength = <8>;
+					output-high;
+				};
+
+				clk2-pins {
+					pins = "gpio28";
+					function = "dmic2_clk";
+					drive-strength = <8>;
+					output-high;
+				};
+
+				data1-pins {
+					pins = "gpio27";
+					function = "dmic1_data";
+					drive-strength = <8>;
+					input-enable;
+				};
+
+				data2-pins {
+					pins = "gpio29";
+					function = "dmic2_data";
+					drive-strength = <8>;
+					input-enable;
+				};
+			};
+		};
 	};
 
 	thermal-zones {
-- 
2.53.0

Re: [PATCH v2 4/5] arm64: dts: qcom: sdm670: add lpi pinctrl

[Dmitry Baryshkov]

On Mon, Mar 09, 2026 at 09:24:45PM -0400, Richard Acayan wrote:
> The Snapdragon 670 has a separate TLMM for audio pins. Add the device
> node for it.
> 
> Signed-off-by: Richard Acayan <mailingradian@gmail.com>
> ---
>  arch/arm64/boot/dts/qcom/sdm670.dtsi | 73 ++++++++++++++++++++++++++++
>  1 file changed, 73 insertions(+)
> 

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


-- 
With best wishes
Dmitry

[PATCH v2 5/5] arm64: dts: qcom: sdm670-google: add reserved lpi gpios

[Richard Acayan]

Some of the GPIOs are reserved for sensors since the ADSP also handles
sensors on SDM670. Add the reserved GPIOs for the LPI pin controller.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
---
 arch/arm64/boot/dts/qcom/sdm670-google-common.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm670-google-common.dtsi b/arch/arm64/boot/dts/qcom/sdm670-google-common.dtsi
index 6116ca8dc426..d8e0f29b8c38 100644
--- a/arch/arm64/boot/dts/qcom/sdm670-google-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm670-google-common.dtsi
@@ -517,6 +517,10 @@ rmi4_f12: rmi4-f12@12 {
 	};
 };
 
+&lpi_tlmm {
+	gpio-reserved-ranges = <0 8>, <12 6>;
+};
+
 &mdss {
 	status = "okay";
 };
-- 
2.53.0

Re: [PATCH v2 5/5] arm64: dts: qcom: sdm670-google: add reserved lpi gpios

[Konrad Dybcio]

On 3/10/26 2:24 AM, Richard Acayan wrote:
> Some of the GPIOs are reserved for sensors since the ADSP also handles
> sensors on SDM670. Add the reserved GPIOs for the LPI pin controller.
> 
> Signed-off-by: Richard Acayan <mailingradian@gmail.com>
> ---

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

Konrad

Re: [PATCH v2 0/5] SDM670 LPASS LPI pin controller support

[Richard Acayan]

On Mon, Mar 09, 2026 at 09:24:41PM -0400, Richard Acayan wrote:
> This adds support for the LPASS LPI pin controller on SDM670, which
> controls some audio pins (e.g. TDM or PDM busses). The ADSP patches are
> not sent yet.
> 
> This series depends on LMh because the LPI devicetree node is next to
> the LMh devicetree node (NOPUSH: link to LMh).

I don't have the email check anymore. Well, here are the dependencies:
- SDM670 Basic SoC thermal zones
  https://lore.kernel.org/r/20260310002037.1863-1-mailingradian@gmail.com
- Support for the Pixel 3a XL with the Tianma panel
  https://lore.kernel.org/r/20260310002606.16413-1-mailingradian@gmail.com