[PATCH master] i2c: stm32: support new st,stm32mp15-i2c compatible

[PATCH master] i2c: stm32: support new st,stm32mp15-i2c compatible

[Ahmad Fatoum]

Linux v5.8-rc1 has gained support for the FastMode+ registers on the
stm32mp15, but those are incompatible between the stm32mp15 and the
stm32f7, so a new compatible was introduced. The old compatible was
replaced for the MP15 SoC, breaking I2C in barebox.
Add the new compatible to fix this.

Unlike Linux, we just use the same setup parameters as for the stm32f7.
This is ok as long we don't want to support FastMode+.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
Hello Sascha,

Yet another v5.8-rc1 dts/ sync breakage.
If possible, please reorder before the dts/ sync.
Otherwise, please apply to master

Cheers,
Ahmad
---
 drivers/i2c/busses/i2c-stm32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c
index 9f34760e3fdf..971f2e68a4da 100644
--- a/drivers/i2c/busses/i2c-stm32.c
+++ b/drivers/i2c/busses/i2c-stm32.c
@@ -847,6 +847,7 @@ static const struct stm32_i2c_setup stm32f7_setup = {
 
 static __maybe_unused struct of_device_id stm32_i2c_dt_ids[] = {
 	{ .compatible = "st,stm32f7-i2c", .data = &stm32f7_setup, },
+	{ .compatible = "st,stm32mp15-i2c", .data = &stm32f7_setup},
 	{ /* sentinel */ }
 };
 
-- 
2.27.0


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Re: [PATCH master] i2c: stm32: support new st,stm32mp15-i2c compatible

[Sascha Hauer]

On Wed, Jul 22, 2020 at 10:21:41AM +0200, Ahmad Fatoum wrote:
> Linux v5.8-rc1 has gained support for the FastMode+ registers on the
> stm32mp15, but those are incompatible between the stm32mp15 and the
> stm32f7, so a new compatible was introduced. The old compatible was
> replaced for the MP15 SoC, breaking I2C in barebox.
> Add the new compatible to fix this.
> 
> Unlike Linux, we just use the same setup parameters as for the stm32f7.
> This is ok as long we don't want to support FastMode+.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
> Hello Sascha,
> 
> Yet another v5.8-rc1 dts/ sync breakage.
> If possible, please reorder before the dts/ sync.
> Otherwise, please apply to master

Applied to master, thanks

Sascha

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