Re: [PATCH 2/2] pinctrl: qcom: add sdm670 pinctrl

From: Bjorn Andersson
Date: Tue Sep 13 2022 - 22:39:13 EST

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In reply to: Richard Acayan: "[PATCH 2/2] pinctrl: qcom: add sdm670 pinctrl"
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On Tue, Sep 13, 2022 at 09:44:04PM -0400, Richard Acayan wrote:
> The Snapdragon 670 has a Top-Level Mode Multiplexer (TLMM) for various
> features. Add a driver to support it.
>
> Signed-off-by: Richard Acayan <mailingradian@xxxxxxxxx>
> ---
> drivers/pinctrl/qcom/Kconfig | 9 +
> drivers/pinctrl/qcom/Makefile | 1 +
> drivers/pinctrl/qcom/pinctrl-sdm670.c | 1368 +++++++++++++++++++++++++
> 3 files changed, 1378 insertions(+)
> create mode 100644 drivers/pinctrl/qcom/pinctrl-sdm670.c
>
> diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
> index 2961b5eb8e10..7aba4188110c 100644
> --- a/drivers/pinctrl/qcom/Kconfig
> +++ b/drivers/pinctrl/qcom/Kconfig
> @@ -283,6 +283,15 @@ config PINCTRL_SDM660
> Qualcomm Technologies Inc TLMM block found on the Qualcomm
> Technologies Inc SDM660 platform.
>
> +config PINCTRL_SDM670
> + tristate "Qualcomm Technologies Inc SDM670 pin controller driver"
> + depends on (OF || ACPI)

I believe you can drop ACPI from this?

> + depends on PINCTRL_MSM
> + help
> + This is the pinctrl, pinmux, pinconf and gpiolib driver for the
> + Qualcomm Technologies Inc TLMM block found on the Qualcomm
> + Technologies Inc SDM670 platform.
> +
> config PINCTRL_SDM845
> tristate "Qualcomm Technologies Inc SDM845 pin controller driver"
> depends on (OF || ACPI)
> diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
> index 8269a1db8794..a5c40f552e5c 100644
> --- a/drivers/pinctrl/qcom/Makefile
> +++ b/drivers/pinctrl/qcom/Makefile
> @@ -33,6 +33,7 @@ obj-$(CONFIG_PINCTRL_SC7280_LPASS_LPI) += pinctrl-sc7280-lpass-lpi.o
> obj-$(CONFIG_PINCTRL_SC8180X) += pinctrl-sc8180x.o
> obj-$(CONFIG_PINCTRL_SC8280XP) += pinctrl-sc8280xp.o
> obj-$(CONFIG_PINCTRL_SDM660) += pinctrl-sdm660.o
> +obj-$(CONFIG_PINCTRL_SDM670) += pinctrl-sdm670.o
> obj-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o
> obj-$(CONFIG_PINCTRL_SDX55) += pinctrl-sdx55.o
> obj-$(CONFIG_PINCTRL_SM6115) += pinctrl-sm6115.o
> diff --git a/drivers/pinctrl/qcom/pinctrl-sdm670.c b/drivers/pinctrl/qcom/pinctrl-sdm670.c
> new file mode 100644
> index 000000000000..2cc6da89b342
> --- /dev/null
> +++ b/drivers/pinctrl/qcom/pinctrl-sdm670.c
> @@ -0,0 +1,1368 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2022, Richard Acayan. All rights reserved.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/pinctrl/pinctrl.h>
> +
> +#include "pinctrl-msm.h"
> +
> +#define FUNCTION(fname) \
> + [msm_mux_##fname] = { \
> + .name = #fname, \
> + .groups = fname##_groups, \
> + .ngroups = ARRAY_SIZE(fname##_groups), \
> + }
> +
> +#define NORTH 0x00500000
> +#define SOUTH 0x00900000
> +#define WEST 0x00100000
> +
> +#define REG_SIZE 0x1000
> +#define PINGROUP(id, base, f1, f2, f3, f4, f5, f6, f7, f8, f9) \
> + { \
> + .name = "gpio" #id, \
> + .pins = gpio##id##_pins, \
> + .npins = ARRAY_SIZE(gpio##id##_pins), \
> + .funcs = (int[]){ \
> + msm_mux_gpio, /* gpio mode */ \
> + msm_mux_##f1, \
> + msm_mux_##f2, \
> + msm_mux_##f3, \
> + msm_mux_##f4, \
> + msm_mux_##f5, \
> + msm_mux_##f6, \
> + msm_mux_##f7, \
> + msm_mux_##f8, \
> + msm_mux_##f9 \
> + }, \
> + .nfuncs = 10, \
> + .ctl_reg = base + REG_SIZE * id, \
> + .io_reg = base + 0x4 + REG_SIZE * id, \
> + .intr_cfg_reg = base + 0x8 + REG_SIZE * id, \
> + .intr_status_reg = base + 0xc + REG_SIZE * id, \
> + .intr_target_reg = base + 0x8 + REG_SIZE * id, \
> + .mux_bit = 2, \
> + .pull_bit = 0, \
> + .drv_bit = 6, \
> + .oe_bit = 9, \
> + .in_bit = 0, \
> + .out_bit = 1, \
> + .intr_enable_bit = 0, \
> + .intr_status_bit = 0, \
> + .intr_target_bit = 5, \
> + .intr_target_kpss_val = 3, \
> + .intr_raw_status_bit = 4, \
> + .intr_polarity_bit = 1, \
> + .intr_detection_bit = 2, \
> + .intr_detection_width = 2, \
> + }
> +
> +/*
> + * A dummy pingroup is a pin group that cannot be assigned a function and has
> + * no registers to control or monitor it.
> + */
> +#define PINGROUP_DUMMY(id) \

This isn't overly pretty, but I don't have a better suggestion for
describing holes in the gpio range.

> + { \
> + .name = "gpio" #id, \
> + .pins = gpio##id##_pins, \
> + .npins = ARRAY_SIZE(gpio##id##_pins), \
> + .ctl_reg = 0, \
> + .io_reg = 0, \
> + .intr_cfg_reg = 0, \
> + .intr_status_reg = 0, \
> + .intr_target_reg = 0, \
> + .mux_bit = -1, \
> + .pull_bit = -1, \
> + .drv_bit = -1, \
> + .oe_bit = -1, \
> + .in_bit = -1, \
> + .out_bit = -1, \
> + .intr_enable_bit = -1, \
> + .intr_status_bit = -1, \
> + .intr_target_bit = -1, \
> + .intr_raw_status_bit = -1, \
> + .intr_polarity_bit = -1, \
> + .intr_detection_bit = -1, \
> + .intr_detection_width = -1, \
> + }
[..]
> +/* Every pin is maintained as a single group, and missing or non-existing pin
> + * would be maintained as dummy group to synchronize pin group index with
> + * pin descriptor registered with pinctrl core.
> + * Clients would not be able to request these dummy pin groups.

The client wouldn't be able to define pinmux/pinconf, but I'm not able
to spot anything that would prevent a client from referencing the gpio?

Perhaps I'm missing something?

Otherwise, I think you should be able to specify reserved_gpios in
sdm670_pinctrl and list the dummy items. This would ensure that the gpio
code as well treat them as absent.

> + */
> +static const struct msm_pingroup sdm670_groups[] = {
> + PINGROUP(0, SOUTH, qup0, _, _, _, _, _, _, _, _),
> + PINGROUP(1, SOUTH, qup0, _, _, _, _, _, _, _, _),
> + PINGROUP(2, SOUTH, qup0, _, _, _, _, _, _, _, _),
> + PINGROUP(3, SOUTH, qup0, _, _, _, _, _, _, _, _),
> + PINGROUP(4, NORTH, qup9, qdss_cti, _, _, _, _, _, _, _),
> + PINGROUP(5, NORTH, qup9, qdss_cti, _, _, _, _, _, _, _),
> + PINGROUP(6, NORTH, qup9, _, ddr_pxi0, _, _, _, _, _, _),
> + PINGROUP(7, NORTH, qup9, ddr_bist, _, atest_tsens2, vsense_trigger,
> + atest_usb1, ddr_pxi0, _, _),

Please unwrap all these lines, it's easier to read that way.

> + PINGROUP(8, WEST, qup_l4, gp_pdm1, ddr_bist, _, _, _, _, _, _),
> + PINGROUP(9, WEST, qup_l5, ddr_bist, _, _, _, _, _, _, _),
> + PINGROUP(10, NORTH, mdp_vsync, qup_l6, ddr_bist, wlan2_adc1,
> + atest_usb11, ddr_pxi2, _, _, _),
> + PINGROUP(11, NORTH, mdp_vsync, edp_lcd, dbg_out, wlan2_adc0,
> + atest_usb10, ddr_pxi2, _, _, _),
> + PINGROUP(12, SOUTH, mdp_vsync, m_voc, tsif1_sync, ddr_pxi3, _, _, _, _,
> + _),
> + PINGROUP(13, WEST, cam_mclk, pll_bypassnl, qdss, ddr_pxi3, _, _, _, _,
> + _),
> + PINGROUP(14, WEST, cam_mclk, pll_reset, qdss, _, _, _, _, _, _),
> + PINGROUP(15, WEST, cam_mclk, qdss, _, _, _, _, _, _, _),
> + PINGROUP(16, WEST, cam_mclk, qdss, _, _, _, _, _, _, _),
> + PINGROUP(17, WEST, cci_i2c, qup1, qdss, _, _, _, _, _, _),
> + PINGROUP(18, WEST, cci_i2c, qup1, _, qdss, _, _, _, _, _),
> + PINGROUP(19, WEST, cci_i2c, qup1, _, qdss, _, _, _, _, _),
> + PINGROUP(20, WEST, cci_i2c, qup1, _, qdss, _, _, _, _, _),
> + PINGROUP(21, WEST, cci_timer0, gcc_gp2, qdss, _, _, _, _, _, _),
> + PINGROUP(22, WEST, cci_timer1, gcc_gp3, qdss, _, _, _, _, _, _),
> + PINGROUP(23, WEST, cci_timer2, qdss, _, _, _, _, _, _, _),
> + PINGROUP(24, WEST, cci_timer3, cci_async, qdss, _, _, _, _, _, _),
> + PINGROUP(25, WEST, cci_timer4, cci_async, qdss, _, _, _, _, _, _),
> + PINGROUP(26, WEST, cci_async, qdss, jitter_bist, _, _, _, _, _, _),
> + PINGROUP(27, WEST, qup2, qdss, pll_bist, _, _, _, _, _, _),
> + PINGROUP(28, WEST, qup2, qdss, agera_pll, _, _, _, _, _, _),
> + PINGROUP(29, WEST, qup2, _, phase_flag, qdss, atest_tsens, _, _, _, _),
> + PINGROUP(30, WEST, qup2, phase_flag, qdss, _, _, _, _, _, _),
> + PINGROUP(31, WEST, qup11, qup14, _, _, _, _, _, _, _),
> + PINGROUP(32, WEST, qup11, qup14, _, _, _, _, _, _, _),
> + PINGROUP(33, WEST, qup11, qup14, _, _, _, _, _, _, _),
> + PINGROUP(34, WEST, qup11, qup14, _, _, _, _, _, _, _),
> + PINGROUP(35, NORTH, pci_e0, qup_l4, jitter_bist, _, _, _, _, _, _),
> + PINGROUP(36, NORTH, pci_e0, qup_l5, pll_bist, _, _, _, _, _, _),
> + PINGROUP(37, NORTH, qup_l6, agera_pll, _, _, _, _, _, _, _),
> + PINGROUP(38, NORTH, usb_phy, _, _, _, _, _, _, _, _),
> + PINGROUP(39, NORTH, lpass_slimbus, _, _, _, _, _, _, _, _),
> + PINGROUP(40, NORTH, sd_write, tsif1_error, _, _, _, _, _, _, _),
> + PINGROUP(41, SOUTH, qup3, _, qdss, _, _, _, _, _, _),
> + PINGROUP(42, SOUTH, qup3, _, qdss, _, _, _, _, _, _),
> + PINGROUP(43, SOUTH, qup3, _, qdss, _, _, _, _, _, _),
> + PINGROUP(44, SOUTH, qup3, _, qdss, _, _, _, _, _, _),
> + PINGROUP(45, SOUTH, qup6, _, _, _, _, _, _, _, _),
> + PINGROUP(46, SOUTH, qup6, _, _, _, _, _, _, _, _),
> + PINGROUP(47, SOUTH, qup6, _, _, _, _, _, _, _, _),
> + PINGROUP(48, SOUTH, qup6, _, _, _, _, _, _, _, _),
> + PINGROUP(49, NORTH, qup12, _, _, _, _, _, _, _, _),
> + PINGROUP(50, NORTH, qup12, _, _, _, _, _, _, _, _),
> + PINGROUP(51, NORTH, qup12, qdss_cti, _, _, _, _, _, _, _),
> + PINGROUP(52, NORTH, qup12, phase_flag, qdss_cti, _, _, _, _, _, _),
> + PINGROUP(53, NORTH, qup10, phase_flag, _, _, _, _, _, _, _),
> + PINGROUP(54, NORTH, qup10, gp_pdm0, phase_flag, _, wlan1_adc1,
> + atest_usb13, ddr_pxi1, _, _),
> + PINGROUP(55, NORTH, qup10, phase_flag, _, wlan1_adc0, atest_usb12,
> + ddr_pxi1, _, _, _),
> + PINGROUP(56, NORTH, qup10, phase_flag, _, _, _, _, _, _, _),
> + PINGROUP(57, NORTH, qua_mi2s, gcc_gp1, phase_flag, _, _, _, _, _, _),
> + PINGROUP_DUMMY(58),
> + PINGROUP_DUMMY(59),
> + PINGROUP_DUMMY(60),
> + PINGROUP_DUMMY(61),
> + PINGROUP_DUMMY(62),
> + PINGROUP_DUMMY(63),
> + PINGROUP_DUMMY(64),
> + PINGROUP(65, NORTH, pri_mi2s, qup8, wsa_clk, _, _, _, _, _, _),
> + PINGROUP(66, NORTH, pri_mi2s_ws, qup8, wsa_data, gp_pdm1, _, _, _, _,
> + _),
> + PINGROUP(67, NORTH, pri_mi2s, qup8, _, atest_usb2, _, _, _, _, _),
> + PINGROUP(68, NORTH, pri_mi2s, qup8, _, atest_usb23, _, _, _, _, _),
> + PINGROUP_DUMMY(69),
> + PINGROUP_DUMMY(70),
> + PINGROUP_DUMMY(71),
> + PINGROUP_DUMMY(72),
> + PINGROUP_DUMMY(73),
> + PINGROUP_DUMMY(74),
> + PINGROUP(75, NORTH, ter_mi2s, phase_flag, qdss, atest_usb22, qup_l4, _,
> + _, _, _),
> + PINGROUP(76, NORTH, ter_mi2s, phase_flag, qdss, atest_usb21, qup_l5, _,
> + _, _, _),
> + PINGROUP(77, NORTH, ter_mi2s, phase_flag, qdss, atest_usb20, qup_l6, _,
> + _, _, _),
> + PINGROUP(78, NORTH, ter_mi2s, gcc_gp1, _, _, _, _, _, _, _),
> + PINGROUP(79, NORTH, sec_mi2s, gp_pdm2, _, qdss, _, _, _, _, _),
> + PINGROUP(80, NORTH, sec_mi2s, _, qdss, _, _, _, _, _, _),
> + PINGROUP(81, NORTH, sec_mi2s, qup15, _, _, _, _, _, _, _),
> + PINGROUP(82, NORTH, sec_mi2s, qup15, _, _, _, _, _, _, _),
> + PINGROUP(83, NORTH, sec_mi2s, qup15, _, _, _, _, _, _, _),
> + PINGROUP(84, NORTH, qup15, _, _, _, _, _, _, _, _),
> + PINGROUP(85, SOUTH, qup5, _, _, _, _, _, _, _, _),
> + PINGROUP(86, SOUTH, qup5, copy_gp, _, _, _, _, _, _, _),
> + PINGROUP(87, SOUTH, qup5, _, _, _, _, _, _, _, _),
> + PINGROUP(88, SOUTH, qup5, _, _, _, _, _, _, _, _),
> + PINGROUP(89, SOUTH, tsif1_clk, qup4, tgu_ch3, phase_flag, _, _, _, _,
> + _),
> + PINGROUP(90, SOUTH, tsif1_en, mdp_vsync0, qup4, mdp_vsync1, mdp_vsync2,
> + mdp_vsync3, tgu_ch0, phase_flag, qdss_cti),
> + PINGROUP(91, SOUTH, tsif1_data, sdc4_cmd, qup4, tgu_ch1, _, qdss_cti,
> + _, _, _),
> + PINGROUP(92, SOUTH, tsif2_error, sdc4_data, qup4, vfr_1, tgu_ch2, _, _, _,
> + _),
> + PINGROUP(93, SOUTH, tsif2_clk, sdc4_clk, qup7, _, qdss, _, _, _, _),
> + PINGROUP(94, SOUTH, tsif2_en, sdc4_data, qup7, _, _, _, _, _, _),
> + PINGROUP(95, SOUTH, tsif2_data, sdc4_data, qup7, gp_pdm0, _, _, _, _, _),
> + PINGROUP(96, SOUTH, tsif2_sync, sdc4_data, qup7, phase_flag, _, _, _, _,
> + _),
> + PINGROUP(97, WEST, _, _, mdp_vsync, ldo_en, _, _, _, _, _),
> + PINGROUP(98, WEST, _, mdp_vsync, ldo_update, _, _, _, _, _, _),
> + PINGROUP(99, NORTH, phase_flag, prng_rosc, _, _, _, _, _, _, _),
> + PINGROUP(100, WEST, phase_flag, _, _, _, _, _, _, _, _),
> + PINGROUP(101, WEST, _, phase_flag, _, _, _, _, _, _, _),
> + PINGROUP(102, WEST, pci_e1, prng_rosc, _, _, _, _, _, _, _),
> + PINGROUP(103, WEST, pci_e1, copy_phase, _, _, _, _, _, _, _),
> + PINGROUP_DUMMY(104),
> + PINGROUP(105, NORTH, uim2_data, qup13, qup_l4, _, _, _, _, _, _),
> + PINGROUP(106, NORTH, uim2_clk, qup13, qup_l5, _, _, _, _, _, _),
> + PINGROUP(107, NORTH, uim2_reset, qup13, qup_l6, _, _, _, _, _, _),
> + PINGROUP(108, NORTH, uim2_present, qup13, _, _, _, _, _, _, _),
> + PINGROUP(109, NORTH, uim1_data, _, _, _, _, _, _, _, _),
> + PINGROUP(110, NORTH, uim1_clk, _, _, _, _, _, _, _, _),
> + PINGROUP(111, NORTH, uim1_reset, _, _, _, _, _, _, _, _),
> + PINGROUP(112, NORTH, uim1_present, _, _, _, _, _, _, _, _),
> + PINGROUP(113, NORTH, uim_batt, edp_hot, _, _, _, _, _, _, _),
> + PINGROUP(114, WEST, _, nav_pps, nav_pps, gps_tx, _, _, _, _, _),
> + PINGROUP(115, WEST, _, nav_pps, nav_pps, gps_tx, _, _, _, _, _),
> + PINGROUP(116, SOUTH, _, _, _, _, _, _, _, _, _),
> + PINGROUP(117, NORTH, _, qdss, atest_char, _, _, _, _, _, _),
> + PINGROUP(118, NORTH, adsp_ext, _, qdss, atest_char, _, _, _, _, _),
> + PINGROUP(119, NORTH, _, qdss, atest_char, _, _, _, _, _, _),
> + PINGROUP(120, NORTH, _, qdss, atest_char, _, _, _, _, _, _),
> + PINGROUP(121, NORTH, _, qdss, atest_char, _, _, _, _, _, _),
> + PINGROUP(122, NORTH, _, qdss, _, _, _, _, _, _, _),
> + PINGROUP(123, NORTH, qup_l4, _, qdss, _, _, _, _, _, _),
> + PINGROUP(124, NORTH, qup_l5, _, qdss, _, _, _, _, _, _),
> + PINGROUP(125, NORTH, qup_l6, _, _, _, _, _, _, _, _),
> + PINGROUP(126, NORTH, _, _, _, _, _, _, _, _, _),
> + PINGROUP(127, WEST, _, _, _, _, _, _, _, _, _),
> + PINGROUP(128, WEST, nav_pps, nav_pps, gps_tx, _, _, _, _, _, _),
> + PINGROUP(129, WEST, nav_pps, nav_pps, gps_tx, _, _, _, _, _, _),
> + PINGROUP(130, WEST, qlink_request, _, _, _, _, _, _, _, _),
> + PINGROUP(131, WEST, qlink_enable, _, _, _, _, _, _, _, _),
> + PINGROUP(132, WEST, _, _, _, _, _, _, _, _, _),
> + PINGROUP(133, NORTH, _, _, _, _, _, _, _, _, _),
> + PINGROUP(134, NORTH, _, _, _, _, _, _, _, _, _),
> + PINGROUP(135, WEST, _, pa_indicator, _, _, _, _, _, _, _),
> + PINGROUP(136, WEST, _, _, _, _, _, _, _, _, _),
> + PINGROUP(137, WEST, _, _, phase_flag, _, _, _, _, _, _),
> + PINGROUP(138, WEST, _, _, phase_flag, _, _, _, _, _, _),
> + PINGROUP(139, WEST, _, phase_flag, _, _, _, _, _, _, _),
> + PINGROUP(140, WEST, _, _, phase_flag, _, _, _, _, _, _),
> + PINGROUP(141, WEST, _, phase_flag, _, _, _, _, _, _, _),
> + PINGROUP(142, WEST, _, phase_flag, _, _, _, _, _, _, _),
> + PINGROUP(143, WEST, _, nav_pps, nav_pps, gps_tx, phase_flag, _, _, _,
> + _),
> + PINGROUP(144, SOUTH, mss_lte, _, _, _, _, _, _, _, _),
> + PINGROUP(145, SOUTH, mss_lte, gps_tx, _, _, _, _, _, _, _),
> + PINGROUP(146, WEST, _, _, _, _, _, _, _, _, _),
> + PINGROUP(147, WEST, _, _, _, _, _, _, _, _, _),
> + PINGROUP(148, WEST, _, _, _, _, _, _, _, _, _),
> + PINGROUP(149, WEST, _, _, _, _, _, _, _, _, _),
> + UFS_RESET(ufs_reset, 0x99d000),
> + SDC_QDSD_PINGROUP(sdc1_rclk, 0x99000, 15, 0),
> + SDC_QDSD_PINGROUP(sdc1_clk, 0x99000, 13, 6),
> + SDC_QDSD_PINGROUP(sdc1_cmd, 0x99000, 11, 3),
> + SDC_QDSD_PINGROUP(sdc1_data, 0x99000, 9, 0),
> + SDC_QDSD_PINGROUP(sdc2_clk, 0x9a000, 14, 6),
> + SDC_QDSD_PINGROUP(sdc2_cmd, 0x9a000, 11, 3),
> + SDC_QDSD_PINGROUP(sdc2_data, 0x9a000, 9, 0),
> +};
> +
> +static const struct msm_pinctrl_soc_data sdm670_pinctrl = {
> + .pins = sdm670_pins,
> + .npins = ARRAY_SIZE(sdm670_pins),
> + .functions = sdm670_functions,
> + .nfunctions = ARRAY_SIZE(sdm670_functions),
> + .groups = sdm670_groups,
> + .ngroups = ARRAY_SIZE(sdm670_groups),
> + .ngpios = 151,
> +};
> +
> +static int sdm670_pinctrl_probe(struct platform_device *pdev)
> +{
> + return msm_pinctrl_probe(pdev, &sdm670_pinctrl);
> +}
> +
> +static const struct of_device_id sdm670_pinctrl_of_match[] = {
> + { .compatible = "qcom,sdm670-pinctrl", },

Forgot to mention this on the binding, but please make this
qcom,sdm670-tlmm.

> + { },
> +};
> +
> +static struct platform_driver sdm670_pinctrl_driver = {
> + .driver = {
> + .name = "sdm670-pinctrl",
> + .of_match_table = sdm670_pinctrl_of_match,
> + },
> + .probe = sdm670_pinctrl_probe,
> + .remove = msm_pinctrl_remove,
> +};
> +
> +static int __init sdm670_pinctrl_init(void)
> +{
> + return platform_driver_register(&sdm670_pinctrl_driver);
> +}
> +arch_initcall(sdm670_pinctrl_init);
> +
> +static void __exit sdm670_pinctrl_exit(void)
> +{
> + platform_driver_unregister(&sdm670_pinctrl_driver);
> +}
> +module_exit(sdm670_pinctrl_exit);
> +
> +MODULE_AUTHOR("Richard Acayan <mailingradian@xxxxxxxxx>");
> +MODULE_DESCRIPTION("QTI sdm670 pinctrl driver");

Perhaps spell out "Qualcomm SDM670 TLMM pinctrl driver".

> +MODULE_LICENSE("GPL");
> +MODULE_DEVICE_TABLE(of, sdm670_pinctrl_of_match);

It's nice to have the MODULE_DEVICE_TABLE next to the of_device_id
table.

Regards,
Bjorn

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