diff mbox series

[5.10.y-cip,02/27] pinctrl: pinconf-generic: Add support for "output-impedance-ohms" to be extracted from DT files

Message ID 20220131121903.8620-3-prabhakar.mahadev-lad.rj@bp.renesas.com (mailing list archive)
State New
Headers show
Series Add RPCIF, SCI{F1} support to Renesas RZ/G2L SoC | expand

Commit Message

Lad Prabhakar Jan. 31, 2022, 12:18 p.m. UTC 
commit 032816fbbfafe3198bb5c71fbbe4e8e5be33b352 upstream.

Add "output-impedance-ohms" property to generic options used for DT
parsing files. This enables drivers, which use generic pin configurations,
to get the value passed to this property.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211027134509.5036-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
[PL: Manually applied the changes.]
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/pinctrl/pinconf-generic.c       | 2 ++
 include/linux/pinctrl/pinconf-generic.h | 3 +++
 2 files changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
index 1e225d513988..fcf261aa532e 100644
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -46,6 +46,7 @@  static const struct pin_config_item conf_items[] = {
 	PCONFDUMP(PIN_CONFIG_LOW_POWER_MODE, "pin low power", "mode", true),
 	PCONFDUMP(PIN_CONFIG_OUTPUT_ENABLE, "output enabled", NULL, false),
 	PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level", true),
+	PCONFDUMP(PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS, "output impedance", "ohms", true),
 	PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true),
 	PCONFDUMP(PIN_CONFIG_SLEEP_HARDWARE_STATE, "sleep hardware state", NULL, false),
 	PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true),
@@ -179,6 +180,7 @@  static const struct pinconf_generic_params dt_params[] = {
 	{ "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 },
 	{ "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 },
 	{ "output-high", PIN_CONFIG_OUTPUT, 1, },
+	{ "output-impedance-ohms", PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS, 0 },
 	{ "output-low", PIN_CONFIG_OUTPUT, 0, },
 	{ "power-source", PIN_CONFIG_POWER_SOURCE, 0 },
 	{ "sleep-hardware-state", PIN_CONFIG_SLEEP_HARDWARE_STATE, 0 },
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index 6aeb711f7cd1..545e598abb0f 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -90,6 +90,8 @@  struct pinctrl_map;
  * 	value on the line. Use argument 1 to indicate high level, argument 0 to
  *	indicate low level. (Please see Documentation/driver-api/pinctl.rst,
  *	section "GPIO mode pitfalls" for a discussion around this parameter.)
+ * @PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: this will configure the output impedance
+ * 	of the pin with the value passed as argument. The argument is in ohms.
  * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power
  *	supplies, the argument to this parameter (on a custom format) tells
  *	the driver which alternative power source to use.
@@ -127,6 +129,7 @@  enum pin_config_param {
 	PIN_CONFIG_LOW_POWER_MODE,
 	PIN_CONFIG_OUTPUT_ENABLE,
 	PIN_CONFIG_OUTPUT,
+	PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS,
 	PIN_CONFIG_POWER_SOURCE,
 	PIN_CONFIG_SLEEP_HARDWARE_STATE,
 	PIN_CONFIG_SLEW_RATE,