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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2020-10-21 12:28:56 +0200 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2020-11-26 14:42:41 +0100 |
| commit | b19d3a55d4789a657c3c6b247ab5c9d8611a8a86 (patch) | |
| tree | 1d3c1059f6105476d49e7b51906ae8bd82570894 /arch/arm/boot | |
| parent | dt-bindings: arm: stm32: add simple-mfd compatible for tamp node (diff) | |
| download | linux-b19d3a55d4789a657c3c6b247ab5c9d8611a8a86.tar.xz linux-b19d3a55d4789a657c3c6b247ab5c9d8611a8a86.zip | |
ARM: dts: stm32: support child mfd cells for the stm32mp1 TAMP syscon
The stm32mp1 TAMP peripheral has 32 backup registers that survive
a warm reset. This makes them suitable for storing a reboot
mode, which the vendor's kernel tree is already doing[0].
The actual syscon-reboot-mode child node can be added by a board.dts or
fixed up by the bootloader. For the child node to be probed, the
compatible needs to include simple-mfd. The binding now specifies this,
so have the SoC dtsi adhere to it.
[0]: https://github.com/STMicroelectronics/linux/commit/2e9bfc29dd
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/dts/stm32mp151.dtsi | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi index a333c633a112..3c75abacb374 100644 --- a/arch/arm/boot/dts/stm32mp151.dtsi +++ b/arch/arm/boot/dts/stm32mp151.dtsi @@ -1574,7 +1574,7 @@ }; tamp: tamp@5c00a000 { - compatible = "st,stm32-tamp", "syscon"; + compatible = "st,stm32-tamp", "syscon", "simple-mfd"; reg = <0x5c00a000 0x400>; }; |