[U-Boot] [PATCH v1 1/5] apalis/colibri_t30: add comment about tristate and input vs. output pinmuxing

Marcel Ziswiler marcel at ziswiler.com
Thu Sep 12 09:12:52 UTC 2019


From: Marcel Ziswiler <marcel.ziswiler at toradex.com>

Add pinmuxing comment stating that TRISTATE means the output driver is
tri-stated and INPUT means the input driver is enabled vs. OUTPUT where
it is disabled.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>

---

 board/toradex/apalis_t30/pinmux-config-apalis_t30.h   | 2 ++
 board/toradex/colibri_t30/pinmux-config-colibri_t30.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/board/toradex/apalis_t30/pinmux-config-apalis_t30.h b/board/toradex/apalis_t30/pinmux-config-apalis_t30.h
index 49c2df7ab2..8d6696aaad 100644
--- a/board/toradex/apalis_t30/pinmux-config-apalis_t30.h
+++ b/board/toradex/apalis_t30/pinmux-config-apalis_t30.h
@@ -11,7 +11,9 @@
 		.pingrp		= PMUX_PINGRP_##_pingrp,	\
 		.func		= PMUX_FUNC_##_mux,		\
 		.pull		= PMUX_PULL_##_pull,		\
+/* TRISTATE here means output driver is tri-stated */ \
 		.tristate	= PMUX_TRI_##_tri,		\
+/* INPUT here means input driver is enabled vs. OUTPUT where it is disabled */ \
 		.io		= PMUX_PIN_##_io,		\
 		.lock		= PMUX_PIN_LOCK_DEFAULT,	\
 		.od		= PMUX_PIN_OD_DEFAULT,		\
diff --git a/board/toradex/colibri_t30/pinmux-config-colibri_t30.h b/board/toradex/colibri_t30/pinmux-config-colibri_t30.h
index bdbbf5e49a..6181b506a4 100644
--- a/board/toradex/colibri_t30/pinmux-config-colibri_t30.h
+++ b/board/toradex/colibri_t30/pinmux-config-colibri_t30.h
@@ -11,7 +11,9 @@
 		.pingrp		= PMUX_PINGRP_##_pingrp,	\
 		.func		= PMUX_FUNC_##_mux,		\
 		.pull		= PMUX_PULL_##_pull,		\
+/* TRISTATE here means output driver is tri-stated */ \
 		.tristate	= PMUX_TRI_##_tri,		\
+/* INPUT here means input driver is enabled vs. OUTPUT where it is disabled */ \
 		.io		= PMUX_PIN_##_io,		\
 		.lock		= PMUX_PIN_LOCK_DEFAULT,	\
 		.od		= PMUX_PIN_OD_DEFAULT,		\
-- 
2.21.0



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