| Message ID | 20231010224928.2296997-17-peter.griffin@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add minimal Tensor/GS101 SoC support and Oriole/Pixel6 board | expand |
Hi Greg, Thanks for the review. On Wed, 11 Oct 2023 at 08:47, Greg KH <gregkh@linuxfoundation.org> wrote: > > On Tue, Oct 10, 2023 at 11:49:24PM +0100, Peter Griffin wrote: > > Add serial driver data for Google Tensor gs101 SoC. > > > > Signed-off-by: Peter Griffin <peter.griffin@linaro.org> > > --- > > drivers/tty/serial/samsung_tty.c | 12 ++++++++++++ > > 1 file changed, 12 insertions(+) > > > > diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c > > index 07fb8a9dac63..79a1a184d5c1 100644 > > --- a/drivers/tty/serial/samsung_tty.c > > +++ b/drivers/tty/serial/samsung_tty.c > > @@ -2597,14 +2597,21 @@ static const struct s3c24xx_serial_drv_data exynos850_serial_drv_data = { > > .fifosize = { 256, 64, 64, 64 }, > > }; > > > > +static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = { > > + EXYNOS_COMMON_SERIAL_DRV_DATA(), > > + .fifosize = { 256, 64, 64, 64 }, > > +}; > > Why are you duplicating a structure that is already in the same file? > What is the benifit here? There is a mistake here, the struct shouldn't be the same as e850 it should look like this static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = { EXYNOS_COMMON_SERIAL_DRV_DATA(), /* rely on samsung,uart-fifosize DT property for fifosize */ .fifosize = { 0 }, }; This then allows the fifosize to be taken from the samsung,uart-fifosize DT property for each of the 19 UARTs on this SoC. > > > #define EXYNOS4210_SERIAL_DRV_DATA (&exynos4210_serial_drv_data) > > #define EXYNOS5433_SERIAL_DRV_DATA (&exynos5433_serial_drv_data) > > #define EXYNOS850_SERIAL_DRV_DATA (&exynos850_serial_drv_data) > > +#define GS101_SERIAL_DRV_DATA (&gs101_serial_drv_data) > > What is "GS101"? gs101 is the name of the SoC in Pixel 6, 6 pro, 6a phones. I've put some more info about the various names of the SoC in the bindings documentation. See https://lore.kernel.org/linux-arm-kernel/20231010224928.2296997-9-peter.griffin@linaro.org/T/#mb45492e58de0bef566df8cdf6191ab8f96f0cf99 > > > #else > > #define EXYNOS4210_SERIAL_DRV_DATA NULL > > #define EXYNOS5433_SERIAL_DRV_DATA NULL > > #define EXYNOS850_SERIAL_DRV_DATA NULL > > +#define GS101_SERIAL_DRV_DATA NULL > > #endif > > > > #ifdef CONFIG_ARCH_APPLE > > @@ -2688,6 +2695,9 @@ static const struct platform_device_id s3c24xx_serial_driver_ids[] = { > > }, { > > .name = "artpec8-uart", > > .driver_data = (kernel_ulong_t)ARTPEC8_SERIAL_DRV_DATA, > > + }, { > > + .name = "gs101-uart", > > + .driver_data = (kernel_ulong_t)GS101_SERIAL_DRV_DATA, > > }, > > { }, > > }; > > @@ -2709,6 +2719,8 @@ static const struct of_device_id s3c24xx_uart_dt_match[] = { > > .data = EXYNOS850_SERIAL_DRV_DATA }, > > { .compatible = "axis,artpec8-uart", > > .data = ARTPEC8_SERIAL_DRV_DATA }, > > + { .compatible = "google,gs101-uart", > > + .data = GS101_SERIAL_DRV_DATA }, > > Why aren't you just listing this hardware as the same one above? There > doesn't need to be a new entry if you just fix up the DT for the board > to declare it as the proper type of device. No need to keep adding new > entries that do the exact same thing, we don't normally like that at all > for other bus types, why is DT different? > I believe Krzysztof already answered this from a dt maintainer point of view. regards, Peter.
diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index 07fb8a9dac63..79a1a184d5c1 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -2597,14 +2597,21 @@ static const struct s3c24xx_serial_drv_data exynos850_serial_drv_data = { .fifosize = { 256, 64, 64, 64 }, }; +static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = { + EXYNOS_COMMON_SERIAL_DRV_DATA(), + .fifosize = { 256, 64, 64, 64 }, +}; + #define EXYNOS4210_SERIAL_DRV_DATA (&exynos4210_serial_drv_data) #define EXYNOS5433_SERIAL_DRV_DATA (&exynos5433_serial_drv_data) #define EXYNOS850_SERIAL_DRV_DATA (&exynos850_serial_drv_data) +#define GS101_SERIAL_DRV_DATA (&gs101_serial_drv_data) #else #define EXYNOS4210_SERIAL_DRV_DATA NULL #define EXYNOS5433_SERIAL_DRV_DATA NULL #define EXYNOS850_SERIAL_DRV_DATA NULL +#define GS101_SERIAL_DRV_DATA NULL #endif #ifdef CONFIG_ARCH_APPLE @@ -2688,6 +2695,9 @@ static const struct platform_device_id s3c24xx_serial_driver_ids[] = { }, { .name = "artpec8-uart", .driver_data = (kernel_ulong_t)ARTPEC8_SERIAL_DRV_DATA, + }, { + .name = "gs101-uart", + .driver_data = (kernel_ulong_t)GS101_SERIAL_DRV_DATA, }, { }, }; @@ -2709,6 +2719,8 @@ static const struct of_device_id s3c24xx_uart_dt_match[] = { .data = EXYNOS850_SERIAL_DRV_DATA }, { .compatible = "axis,artpec8-uart", .data = ARTPEC8_SERIAL_DRV_DATA }, + { .compatible = "google,gs101-uart", + .data = GS101_SERIAL_DRV_DATA }, {}, }; MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);
Add serial driver data for Google Tensor gs101 SoC. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> --- drivers/tty/serial/samsung_tty.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)