[PATCH v2 3/5] pinctrl: qcom: Add SM6350 LPASS LPI TLMM

Luca Weiss
2026-04-30T07:10:55Z

Add support for the pin controller block on SM6350 Low Power Island.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
---
drivers/pinctrl/qcom/Kconfig | 9 ++
drivers/pinctrl/qcom/Makefile | 1 +
drivers/pinctrl/qcom/pinctrl-sm6350-lpass-lpi.c | 149 ++++++++++++++++++++++++
3 files changed, 159 insertions(+)

diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index 80af372a1147..ea7e10149e47 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -118,6 +118,15 @@ config PINCTRL_SM6115_LPASS_LPI
Qualcomm Technologies Inc LPASS (Low Power Audio SubSystem) LPI
(Low Power Island) found on the Qualcomm Technologies Inc SM6115 platform.

+config PINCTRL_SM6350_LPASS_LPI
+ tristate "Qualcomm Technologies Inc SM6350 LPASS LPI pin controller driver"
+ 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 SM6350 platform.
+
config PINCTRL_SM8250_LPASS_LPI
tristate "Qualcomm Technologies Inc SM8250 LPASS LPI pin controller driver"
depends on ARM64 || COMPILE_TEST
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index 84bda3ada874..94e23a66ca3e 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_PINCTRL_SM6115) += pinctrl-sm6115.o
obj-$(CONFIG_PINCTRL_SM6115_LPASS_LPI) += pinctrl-sm6115-lpass-lpi.o
obj-$(CONFIG_PINCTRL_SM6125) += pinctrl-sm6125.o
obj-$(CONFIG_PINCTRL_SM6350) += pinctrl-sm6350.o
+obj-$(CONFIG_PINCTRL_SM6350_LPASS_LPI) += pinctrl-sm6350-lpass-lpi.o
obj-$(CONFIG_PINCTRL_SM6375) += pinctrl-sm6375.o
obj-$(CONFIG_PINCTRL_SM7150) += pinctrl-sm7150.o
obj-$(CONFIG_PINCTRL_SM8150) += pinctrl-sm8150.o
diff --git a/drivers/pinctrl/qcom/pinctrl-sm6350-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sm6350-lpass-lpi.c
new file mode 100644
index 000000000000..4d06abcfedfd
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-sm6350-lpass-lpi.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2026, Luca Weiss <luca.weiss@fairphone.com>
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "pinctrl-lpass-lpi.h"
+
+enum lpass_lpi_functions {
+ LPI_MUX_dmic1_clk,
+ LPI_MUX_dmic1_data,
+ LPI_MUX_dmic2_clk,
+ LPI_MUX_dmic2_data,
+ LPI_MUX_dmic3_clk,
+ LPI_MUX_dmic3_data,
+ LPI_MUX_i2s1_clk,
+ LPI_MUX_i2s1_data,
+ LPI_MUX_i2s1_ws,
+ LPI_MUX_i2s2_clk,
+ LPI_MUX_i2s2_data,
+ LPI_MUX_i2s2_ws,
+ LPI_MUX_qua_mi2s_data,
+ LPI_MUX_qua_mi2s_sclk,
+ LPI_MUX_qua_mi2s_ws,
+ LPI_MUX_swr_rx_clk,
+ LPI_MUX_swr_rx_data,
+ LPI_MUX_swr_tx_clk,
+ LPI_MUX_swr_tx_data,
+ LPI_MUX_wsa_swr_clk,
+ LPI_MUX_wsa_swr_data,
+ LPI_MUX_gpio,
+ LPI_MUX__,
+};
+
+static const struct pinctrl_pin_desc sm6350_lpi_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"),
+};
+
+static const char * const swr_tx_clk_groups[] = { "gpio0" };
+static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio14" };
+static const char * const swr_rx_clk_groups[] = { "gpio3" };
+static const char * const swr_rx_data_groups[] = { "gpio4", "gpio5" };
+static const char * const dmic1_clk_groups[] = { "gpio6" };
+static const char * const dmic1_data_groups[] = { "gpio7" };
+static const char * const dmic2_clk_groups[] = { "gpio8" };
+static const char * const dmic2_data_groups[] = { "gpio9" };
+static const char * const i2s2_clk_groups[] = { "gpio10" };
+static const char * const i2s2_ws_groups[] = { "gpio11" };
+static const char * const dmic3_clk_groups[] = { "gpio12" };
+static const char * const dmic3_data_groups[] = { "gpio13" };
+static const char * const qua_mi2s_sclk_groups[] = { "gpio0" };
+static const char * const qua_mi2s_ws_groups[] = { "gpio1" };
+static const char * const qua_mi2s_data_groups[] = { "gpio2", "gpio3", "gpio4", "gpio5" };
+static const char * const i2s1_clk_groups[] = { "gpio6" };
+static const char * const i2s1_ws_groups[] = { "gpio7" };
+static const char * const i2s1_data_groups[] = { "gpio8", "gpio9" };
+static const char * const wsa_swr_clk_groups[] = { "gpio10" };
+static const char * const wsa_swr_data_groups[] = { "gpio11" };
+static const char * const i2s2_data_groups[] = { "gpio12", "gpio13" };
+
+static const struct lpi_pingroup sm6350_groups[] = {
+ LPI_PINGROUP(0, 0, swr_tx_clk, qua_mi2s_sclk, _, _),
+ LPI_PINGROUP(1, 2, swr_tx_data, qua_mi2s_ws, _, _),
+ LPI_PINGROUP(2, 4, swr_tx_data, qua_mi2s_data, _, _),
+ LPI_PINGROUP(3, 8, swr_rx_clk, qua_mi2s_data, _, _),
+ LPI_PINGROUP(4, 10, swr_rx_data, qua_mi2s_data, _, _),
+ LPI_PINGROUP(5, 12, swr_rx_data, _, qua_mi2s_data, _),
+ LPI_PINGROUP(6, LPI_NO_SLEW, dmic1_clk, i2s1_clk, _, _),
+ LPI_PINGROUP(7, LPI_NO_SLEW, dmic1_data, i2s1_ws, _, _),
+ LPI_PINGROUP(8, LPI_NO_SLEW, dmic2_clk, i2s1_data, _, _),
+ LPI_PINGROUP(9, LPI_NO_SLEW, dmic2_data, i2s1_data, _, _),
+ LPI_PINGROUP(10, 16, i2s2_clk, wsa_swr_clk, _, _),
+ LPI_PINGROUP(11, 18, i2s2_ws, wsa_swr_data, _, _),
+ LPI_PINGROUP(12, LPI_NO_SLEW, dmic3_clk, i2s2_data, _, _),
+ LPI_PINGROUP(13, LPI_NO_SLEW, dmic3_data, i2s2_data, _, _),
+ LPI_PINGROUP_SLEW_SPARE_1(14, 0, swr_tx_data, _, _, _),
+};
+
+static const struct lpi_function sm6350_functions[] = {
+ LPI_FUNCTION(dmic1_clk),
+ LPI_FUNCTION(dmic1_data),
+ LPI_FUNCTION(dmic2_clk),
+ LPI_FUNCTION(dmic2_data),
+ LPI_FUNCTION(dmic3_clk),
+ LPI_FUNCTION(dmic3_data),
+ LPI_FUNCTION(i2s1_clk),
+ LPI_FUNCTION(i2s1_data),
+ LPI_FUNCTION(i2s1_ws),
+ LPI_FUNCTION(i2s2_clk),
+ LPI_FUNCTION(i2s2_data),
+ LPI_FUNCTION(i2s2_ws),
+ LPI_FUNCTION(qua_mi2s_data),
+ LPI_FUNCTION(qua_mi2s_sclk),
+ LPI_FUNCTION(qua_mi2s_ws),
+ LPI_FUNCTION(swr_rx_clk),
+ LPI_FUNCTION(swr_rx_data),
+ LPI_FUNCTION(swr_tx_clk),
+ LPI_FUNCTION(swr_tx_data),
+ LPI_FUNCTION(wsa_swr_clk),
+ LPI_FUNCTION(wsa_swr_data),
+};
+
+static const struct lpi_pinctrl_variant_data sm6350_lpi_data = {
+ .pins = sm6350_lpi_pins,
+ .npins = ARRAY_SIZE(sm6350_lpi_pins),
+ .groups = sm6350_groups,
+ .ngroups = ARRAY_SIZE(sm6350_groups),
+ .functions = sm6350_functions,
+ .nfunctions = ARRAY_SIZE(sm6350_functions),
+};
+
+static const struct of_device_id lpi_pinctrl_of_match[] = {
+ {
+ .compatible = "qcom,sm6350-lpass-lpi-pinctrl",
+ .data = &sm6350_lpi_data,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lpi_pinctrl_of_match);
+
+static struct platform_driver lpi_pinctrl_driver = {
+ .driver = {
+ .name = "qcom-sm6350-lpass-lpi-pinctrl",
+ .of_match_table = lpi_pinctrl_of_match,
+ },
+ .probe = lpi_pinctrl_probe,
+ .remove = lpi_pinctrl_remove,
+};
+
+module_platform_driver(lpi_pinctrl_driver);
+MODULE_DESCRIPTION("Qualcomm SM6350 LPI GPIO pin control driver");
+MODULE_LICENSE("GPL");

--
2.54.0