[PATCH] pinctrl: tigerlake: Document supported platforms in Kconfig help

[Ariel Simulevski <ariel@simulevski.at>]

The Tiger Lake pinctrl driver is also used by some Alder Lake platforms
that reuse the same GPIO IP blocks.

Update the Kconfig help texts for both drivers to document supported
platforms and clarify when CONFIG_PINCTRL_TIGERLAKE may be required.

Supported platforms:
  - Tiger Lake (all variants)
  - Alder Lake-P

Reported-by: Guido Trentalancia <guido2022@trentalancia.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220056
Signed-off-by: Ariel Simulevski <ariel@simulevski.at>
---
 drivers/pinctrl/intel/Kconfig | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig
index 248c2e558ff3..f1114828457d 100644
--- a/drivers/pinctrl/intel/Kconfig
+++ b/drivers/pinctrl/intel/Kconfig
@@ -54,6 +54,9 @@ config PINCTRL_ALDERLAKE
 	  This pinctrl driver provides an interface that allows configuring
 	  of Intel Alder Lake PCH pins and using them as GPIOs.
 
+	  Some platforms may reuse GPIO IP blocks from earlier generations
+	  and require CONFIG_PINCTRL_TIGERLAKE instead.
+
 config PINCTRL_BROXTON
 	tristate "Intel Broxton pinctrl and GPIO driver"
 	select PINCTRL_INTEL
@@ -161,5 +164,11 @@ config PINCTRL_TIGERLAKE
 	  This pinctrl driver provides an interface that allows configuring
 	  of Intel Tiger Lake PCH pins and using them as GPIOs.
 
+	  Also used on some Alder Lake platforms that share compatible GPIO IP.
+
+	  Supported platforms:
+	    - Tiger Lake (all variants)
+	    - Alder Lake-P
+
 source "drivers/pinctrl/intel/Kconfig.tng"
 endmenu
-- 
2.49.0