Eric Lee / smarc-uboot

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Commit 458a070076dc920a7106f0c8f0cfa880503ce498

Authored by Simon Glass
1 parent b7e84c93c4
Exists in v2017.01-smarct4x and in 31 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, emb_lf_v2023.04, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc-imx6_v2018.03_4.14.98_2.0.0_ga, smarc-imx7_v2017.03_4.9.11_1.0.0_ga, smarc-imx7_v2018.03_4.14.98_2.0.0_ga, smarc-imx_v2017.03_4.9.11_1.0.0_ga, smarc-imx_v2017.03_4.9.88_2.0.0_ga, smarc-imx_v2017.03_o8.1.0_1.3.0_8m, smarc-imx_v2018.03_4.14.78_1.0.0_ga, smarc-n7.1.2_2.0.0-ga, smarc-rel_imx_4.1.15_2.0.0_ga, smarc_8m-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8m-imx_v2019.04_4.19.35_1.1.0, smarc_8m_00d0-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0, smarc_8mq_lf_v2020.04, v2016.05-dlt, v2016.05-smarct3x, v2016.05-smarct3x-emmc, v2016.05-smarct4x, v2017.01-smarct3x, v2017.01-smarct3x-emmc

pinctrl: Add help text to Kconfig 

The pinctrl Kconfig options should have help messages. Add this to a few
options.

Signed-off-by: Simon Glass <sjg@chromium.org>

Showing 1 changed file with 10 additions and 1 deletions Side-by-side Diff

drivers/pinctrl/Kconfig
Diff comments   View file @ 458a070
... ... @@ -47,7 +47,10 @@
47 47 default y
48 48 help
49 49 This option enables pin multiplexing through the generic pinctrl
50   - framework.
  50 + framework. Most SoCs have their own own multiplexing arrangement
  51 + where a single pin can be used for several functions. An SoC pinctrl
  52 + driver allows the required function to be selected for each pin.
  53 + The driver is typically controlled by the device tree.
51 54  
52 55 config PINCONF
53 56 bool "Support pin configuration controllers"
... ... @@ -86,6 +89,12 @@
86 89 help
87 90 This option is an SPL-variant of the PINMUX option.
88 91 See the help of PINMUX for details.
  92 + The pinctrl subsystem can add a substantial overhead to the SPL
  93 + image since it typically requires quite a few tables either in the
  94 + driver or in the device tree. If this is acceptable and you need
  95 + to adjust pin multiplexing in SPL in order to boot into U-Boot,
  96 + enable this option. You will need to enable device tree in SPL
  97 + for this to work.
89 98  
90 99 config SPL_PINCONF
91 100 bool "Support pin configuration controllers in SPL"