From: Alexandre Torgue <alexandre.torgue@st.com>
To: Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Arnd Bergmann <arnd@arndb.de>,
Russell King <linux@armlinux.org.uk>
Cc: devicetree@vger.kernel.org,
Benjamin Gaignard <benjamin.gaignard@linaro.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, vikas.manocha@st.com
Subject: [PATCH v4] ARM: dts: stm32: change pinctrl bindings definition
Date: Wed, 30 Aug 2017 16:50:52 +0200 [thread overview]
Message-ID: <1504104653-26804-1-git-send-email-alexandre.torgue@st.com> (raw)
Initially each pin was declared in "include/dt-bindings/stm32<SOC>-pinfunc.h"
and each definition contained SOC names (ex: STM32F429_PA9_FUNC_USART1_TX).
Since this approach was approved, the number of supported MCU has
increased (STM32F429/STM32F469/STM32f746/STM32H743). To avoid to add a new
file in "include/dt-bindings" each time a new STM32 SOC arrives I propose
a new approach which consist to use a macro to define pin muxing in device
tree. All STM32 DT will use the common macro to define pinmux. Furthermore, it
will make maintenance and integration of new SOC easier.
I made only one patch to avoid dependencies. Let me know if you prefer that I
split it.
To check that patch generate same dtb than befrore I used dtc binary to (re)generate dts files
(before and after apply the series).
Example on stm32f469-disco:
./scripts/dtc/dtc -I dtb -O dts -o stm32f469-disco-after.dts
stm32f469-disco-after.dtb
./scripts/dtc/dtc -I dtb -O dts -o stm32f469-disco-before.dts
stm32f469-disco-before.dtb
Then diff -u stm32f469-disco-before.dts stm32f469-disco-after.dts
Changes since v3:
-Rewrite documentation part
-Simplify macro
Changes since v2:
-Drop RFC tag
-Add reviewers
-Enhance modifications to all STM32 (F4/F7/H7)
Changes since v1:
-According to Vikas Manocha review, use generic macro to define port.
Regards
Alex
Alexandre Torgue (1):
ARM: dts: stm32: change pinctrl bindings definition
.../bindings/pinctrl/st,stm32-pinctrl.txt | 22 +-
arch/arm/boot/dts/stm32f429.dtsi | 176 +--
arch/arm/boot/dts/stm32f746.dtsi | 10 +-
arch/arm/boot/dts/stm32h743-pinctrl.dtsi | 10 +-
include/dt-bindings/pinctrl/stm32-pinfunc.h | 30 +
include/dt-bindings/pinctrl/stm32f429-pinfunc.h | 1239 ---------------
include/dt-bindings/pinctrl/stm32f746-pinfunc.h | 1324 ----------------
include/dt-bindings/pinctrl/stm32h7-pinfunc.h | 1612 --------------------
8 files changed, 148 insertions(+), 4275 deletions(-)
create mode 100644 include/dt-bindings/pinctrl/stm32-pinfunc.h
delete mode 100644 include/dt-bindings/pinctrl/stm32f429-pinfunc.h
delete mode 100644 include/dt-bindings/pinctrl/stm32f746-pinfunc.h
delete mode 100644 include/dt-bindings/pinctrl/stm32h7-pinfunc.h
--
2.7.4
next reply other threads:[~2017-08-30 14:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-30 14:50 Alexandre Torgue [this message]
[not found] ` <1504104653-26804-1-git-send-email-alexandre.torgue-qxv4g6HH51o@public.gmane.org>
2017-08-30 14:50 ` [PATCH v4] ARM: dts: stm32: change pinctrl bindings definition Alexandre Torgue
[not found] ` <1504104653-26804-2-git-send-email-alexandre.torgue-qxv4g6HH51o@public.gmane.org>
2017-09-11 21:07 ` Rob Herring
2017-09-11 21:05 ` Rob Herring
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