From mboxrd@z Thu Jan 1 00:00:00 1970 From: robh@kernel.org (Rob Herring) Date: Mon, 7 May 2018 11:35:37 -0500 Subject: [PATCH V2 8/8] dt-bindings: stm32: add compatible for syscon In-Reply-To: <1525270723-18241-9-git-send-email-christophe.roullier@st.com> References: <1525270723-18241-1-git-send-email-christophe.roullier@st.com> <1525270723-18241-9-git-send-email-christophe.roullier@st.com> Message-ID: <20180507163537.GA15212@rob-hp-laptop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, May 02, 2018 at 04:18:43PM +0200, Christophe Roullier wrote: > This patch describes syscon DT bindings. > > Signed-off-by: Christophe Roullier > --- > Documentation/devicetree/bindings/arm/stm32.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/arm/stm32.txt b/Documentation/devicetree/bindings/arm/stm32.txt > index 6808ed9..06e3834 100644 > --- a/Documentation/devicetree/bindings/arm/stm32.txt > +++ b/Documentation/devicetree/bindings/arm/stm32.txt > @@ -8,3 +8,7 @@ using one of the following compatible strings: > st,stm32f746 > st,stm32h743 > st,stm32mp157 > + > +Required nodes: > +- syscon: the soc bus node must have a system controller node pointing to the > + global control registers, with the compatible string "syscon"; You misunderstood my prior comment. 'syscon' alone is not valid. You need SoC specific compatible string for it and 'stm32' is not SoC specific. IOW, the compatible property for a syscon should imply every single register field in the block. Rob