Re: [PATCH v2 8/8] pinctrl: stm32: Add STM32H750 MCU pinctrl support

From: Alexandre TORGUE
Date: Mon Mar 29 2021 - 04:01:53 EST


Hi Dillon

On 3/12/21 7:24 AM, dillon.minfei@xxxxxxxxx wrote:
From: dillon min <dillon.minfei@xxxxxxxxx>

This patch adds STM32H750 pinctrl and GPIO support
since stm32h750 has the same pin alternate functions
with stm32h743, so just reuse the stm32h743's pinctrl
driver

Signed-off-by: dillon min <dillon.minfei@xxxxxxxxx>
---
v2:
- add compatible string st,stm32h750-pinctrl to pinctl-stm32h743.c as they
have same pin alternate functions
- add STM32H750 to Kconfig description

drivers/pinctrl/stm32/Kconfig | 2 +-
drivers/pinctrl/stm32/pinctrl-stm32h743.c | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/stm32/Kconfig b/drivers/pinctrl/stm32/Kconfig
index f36f29113370..fb1ffc94c57f 100644
--- a/drivers/pinctrl/stm32/Kconfig
+++ b/drivers/pinctrl/stm32/Kconfig
@@ -35,7 +35,7 @@ config PINCTRL_STM32F769
select PINCTRL_STM32
config PINCTRL_STM32H743
- bool "STMicroelectronics STM32H743 pin control" if COMPILE_TEST && !MACH_STM32H743
+ bool "STMicroelectronics STM32H743/STM32H750 pin control" if COMPILE_TEST && !MACH_STM32H743
depends on OF && HAS_IOMEM
default MACH_STM32H743
select PINCTRL_STM32
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32h743.c b/drivers/pinctrl/stm32/pinctrl-stm32h743.c
index ffe7b5271506..700206c7bc11 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32h743.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32h743.c
@@ -1966,6 +1966,9 @@ static const struct of_device_id stm32h743_pctrl_match[] = {
.compatible = "st,stm32h743-pinctrl",
.data = &stm32h743_match_data,
},
+ { .compatible = "st,stm32h750-pinctrl",
+ .data = &stm32h743_match_data,
+ },

If you use exactly the same driver (i.e. same ball out and AF mux) then you don't have to create a new compatible for that. Just use the same than h743.(so you don't have to factorize DT files).

Regards
Alex

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