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drivers: tpm2: update reset gpio semantics

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Use the more generic reset-gpios property name.

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Jorge Ramirez-Ortiz 2021-06-03 12:40:26 +02:00 committed by Tom Rini
parent 8a0f5f6e70
commit cc5afabc9d
2 changed files with 17 additions and 9 deletions
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3
doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
View File

@ -6,7 +6,8 @@ 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)
- gpio-reset : Reset GPIO (deprecated, use reset-gpios instead)
- spi-max-frequency : See spi-bus.txt
Example:

23
drivers/tpm/tpm2_tis_spi.c
View File

@ -589,18 +589,25 @@ 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",
__func__);
} else {
dm_gpio_set_value(&reset_gpio, 1);
mdelay(1);
dm_gpio_set_value(&reset_gpio, 0);
/* legacy reset */
ret = gpio_request_by_name(dev, "gpio-reset", 0,
&reset_gpio, GPIOD_IS_OUT);
if (ret) {
log(LOGC_NONE, LOGL_NOTICE,
"%s: missing reset GPIO\n", __func__);
goto init;
}
log(LOGC_NONE, LOGL_NOTICE,
"%s: gpio-reset is deprecated\n", __func__);
}
dm_gpio_set_value(&reset_gpio, 1);
mdelay(1);
dm_gpio_set_value(&reset_gpio, 0);
}
init:
/* Ensure a minimum amount of time elapsed since reset of the TPM */
mdelay(drv_data->time_before_first_cmd_ms);