The pinctrl Kconfig options should have help messages. Add this to a few options.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v4: None Changes in v3: None Changes in v2: None
drivers/pinctrl/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index c6229d9..30617f0 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -18,6 +18,12 @@ config PINCTRL_GENERIC config PINMUX bool "Support pin multiplexing controllers" depends on PINCTRL_GENERIC + help + Support pin multiplexing control in U-Boot. Most SoCs have their own + own multiplexing arrangement where a single pin can be used for + several functions. An SoC pinctrl driver allows the required + function to be selected for each pin. The driver is typically + controlled by the device tree.
config PINCONF bool "Support pin configuration controllers" @@ -38,6 +44,13 @@ config SPL_PINCTRL_GENERIC config SPL_PINMUX bool "Support pin multiplexing controllers in SPL" depends on SPL_PINCTRL_GENERIC + help + The pinctrl subsystem can add a substantial overhead to the SPL + image since it typically requires quite a few tables either in the + driver or in the device tree. If this is acceptable and you need + to adjust pin multiplexing in SPL in order to boot into U-Boot, + enable this option. You will need to enable device tree in SPL + for this to work.
config SPL_PINCONF bool "Support pin configuration controllers in SPL"