Add support for TLMM pin controller block (Top Level Mode Multiplexer) on Milos SoC, with support for special pins.
Correct pin configuration is required for working debug UART and eMMC/SD cards. Signed-off-by: Luca Weiss <[email protected]> --- drivers/pinctrl/qcom/Kconfig | 8 +++ drivers/pinctrl/qcom/Makefile | 1 + drivers/pinctrl/qcom/pinctrl-milos.c | 104 +++++++++++++++++++++++++++++++++++ 3 files changed, 113 insertions(+) diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig index 580308621b1..11e6763b5f3 100644 --- a/drivers/pinctrl/qcom/Kconfig +++ b/drivers/pinctrl/qcom/Kconfig @@ -54,6 +54,14 @@ config PINCTRL_QCOM_IPQ9574 Say Y here to enable support for pinctrl on the IPQ9574 SoC, as well as the associated GPIO driver. +config PINCTRL_QCOM_MILOS + bool "Qualcomm Milos Pinctrl" + default y if PINCTRL_QCOM_GENERIC + select PINCTRL_QCOM + help + Say Y here to enable support for pinctrl on the Snapdragon Milos SoC, + as well as the associated GPIO driver. + config PINCTRL_QCOM_QCM2290 bool "Qualcomm QCM2290 Pinctrl" default y if PINCTRL_QCOM_GENERIC diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile index b5a111605ed..4096c1aa491 100644 --- a/drivers/pinctrl/qcom/Makefile +++ b/drivers/pinctrl/qcom/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_PINCTRL_QCOM_IPQ4019) += pinctrl-ipq4019.o obj-$(CONFIG_PINCTRL_QCOM_IPQ5424) += pinctrl-ipq5424.o obj-$(CONFIG_PINCTRL_QCOM_IPQ9574) += pinctrl-ipq9574.o obj-$(CONFIG_PINCTRL_QCOM_APQ8096) += pinctrl-apq8096.o +obj-$(CONFIG_PINCTRL_QCOM_MILOS) += pinctrl-milos.o obj-$(CONFIG_PINCTRL_QCOM_QCM2290) += pinctrl-qcm2290.o obj-$(CONFIG_PINCTRL_QCOM_QCS404) += pinctrl-qcs404.o obj-$(CONFIG_PINCTRL_QCOM_QCS615) += pinctrl-qcs615.o diff --git a/drivers/pinctrl/qcom/pinctrl-milos.c b/drivers/pinctrl/qcom/pinctrl-milos.c new file mode 100644 index 00000000000..974c1a7d594 --- /dev/null +++ b/drivers/pinctrl/qcom/pinctrl-milos.c @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Qualcomm Milos pinctrl + * + * (C) Copyright 2024 Linaro Ltd. + * (C) Copyright 2025 Luca Weiss <[email protected]> + * + */ + +#include <dm.h> + +#include "pinctrl-qcom.h" + +#define MAX_PIN_NAME_LEN 32 +static char pin_name[MAX_PIN_NAME_LEN] __section(".data"); + +static const struct pinctrl_function msm_pinctrl_functions[] = { + {"qup0_se5", 1}, + {"sdc2_clk", 1}, + {"sdc2_cmd", 1}, + {"sdc2_data", 1}, + {"gpio", 0}, +}; + +#define SDC_QDSD_PINGROUP(pg_name, ctl, pull, drv) \ + { \ + .name = pg_name, \ + .ctl_reg = ctl, \ + .io_reg = 0, \ + .pull_bit = pull, \ + .drv_bit = drv, \ + .oe_bit = -1, \ + .in_bit = -1, \ + .out_bit = -1, \ + } + +#define UFS_RESET(pg_name, ctl, io) \ + { \ + .name = pg_name, \ + .ctl_reg = ctl, \ + .io_reg = io, \ + .pull_bit = 3, \ + .drv_bit = 0, \ + .oe_bit = -1, \ + .in_bit = -1, \ + .out_bit = 0, \ + } + +static const struct msm_special_pin_data msm_special_pins_data[] = { + [0] = UFS_RESET("ufs_reset", 0xb4004, 0xb5000), + [1] = SDC_QDSD_PINGROUP("sdc2_clk", 0xab000, 0, 6), + [2] = SDC_QDSD_PINGROUP("sdc2_cmd", 0xab000, 12, 3), + [3] = SDC_QDSD_PINGROUP("sdc2_data", 0xab000, 9, 0), +}; + +static const char *milos_get_function_name(struct udevice *dev, + unsigned int selector) +{ + return msm_pinctrl_functions[selector].name; +} + +static const char *milos_get_pin_name(struct udevice *dev, + unsigned int selector) +{ + if (selector >= 167 && selector <= 170) + snprintf(pin_name, MAX_PIN_NAME_LEN, + msm_special_pins_data[selector - 167].name); + else + snprintf(pin_name, MAX_PIN_NAME_LEN, "gpio%u", selector); + + return pin_name; +} + +static int milos_get_function_mux(__maybe_unused unsigned int pin, + unsigned int selector) +{ + return msm_pinctrl_functions[selector].val; +} + +static struct msm_pinctrl_data milos_data = { + .pin_data = { + .pin_count = 171, + .special_pins_start = 167, + .special_pins_data = msm_special_pins_data, + }, + .functions_count = ARRAY_SIZE(msm_pinctrl_functions), + .get_function_name = milos_get_function_name, + .get_function_mux = milos_get_function_mux, + .get_pin_name = milos_get_pin_name, +}; + +static const struct udevice_id msm_pinctrl_ids[] = { + { .compatible = "qcom,milos-tlmm", .data = (ulong)&milos_data }, + { /* Sentinel */ } +}; + +U_BOOT_DRIVER(pinctrl_milos) = { + .name = "pinctrl_milos", + .id = UCLASS_NOP, + .of_match = msm_pinctrl_ids, + .ops = &msm_pinctrl_ops, + .bind = msm_pinctrl_bind, +}; + -- 2.53.0
