[PATCH] drivers: tpm2: update reset gpio semantics

[Michal Simek]

On 5/26/21 9:57 PM, Jorge Ramirez-Ortiz wrote:
> Use the more generic reset-gpios propery name.
> 
> Signed-off-by: Jorge Ramirez-Ortiz <jorge at foundries.io>
> ---
>  doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt | 2 +-
>  drivers/tpm/tpm2_tis_spi.c                     | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt b/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
> index 3a2ee4bd17..bbcd12950f 100644
> --- a/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
> +++ b/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
> @@ -6,7 +6,7 @@ Required properties:
>  - reg			: SPI Chip select
>  
>  Optional properties:
> -- gpio-reset		: Reset GPIO (if not connected to the SoC reset line)
> +- reset-gpios		: Reset GPIO (if not connected to the SoC reset line)
>  - spi-max-frequency	: See spi-bus.txt
>  
>  Example:
> diff --git a/drivers/tpm/tpm2_tis_spi.c b/drivers/tpm/tpm2_tis_spi.c
> index 4b33ac8fd3..94ac52d9ce 100644
> --- a/drivers/tpm/tpm2_tis_spi.c
> +++ b/drivers/tpm/tpm2_tis_spi.c
> @@ -589,7 +589,7 @@ static int tpm_tis_spi_probe(struct udevice *dev)
>  	if (CONFIG_IS_ENABLED(DM_GPIO)) {
>  		struct gpio_desc reset_gpio;
>  
> -		ret = gpio_request_by_name(dev, "gpio-reset", 0,
> +		ret = gpio_request_by_name(dev, "reset-gpios", 0,
>  					   &reset_gpio, GPIOD_IS_OUT);
>  		if (ret) {
>  			log(LOGC_NONE, LOGL_NOTICE, "%s: missing reset GPIO\n",
> 

I think you should deprecate gpio-reset but keep supporting that option
with any warning and add code for reset-gpios.

Also would be good to add it as optional property to Linux kernel to
keep it in sync.

Thanks,
Michal