linux-kernel - [PATCH 1/3] ARM: dts: stm32: set HSE_RTC clock frequency to 1 MHz on stm32f746

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Message-ID: <1484833519-9298-2-git-send-email-amelie.delaunay@st.com>
Date:   Thu, 19 Jan 2017 14:45:17 +0100
From:   Amelie Delaunay <amelie.delaunay@...com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Amelie Delaunay <amelie.delaunay@...com>
Subject: [PATCH 1/3] ARM: dts: stm32: set HSE_RTC clock frequency to 1 MHz on stm32f746

This patch set HSE_RTC clock frequency to 1 MHz, as the clock supplied to
the RTC must be 1 MHz.

Signed-off-by: Amelie Delaunay <amelie.delaunay@...com>
---
 arch/arm/boot/dts/stm32f746.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi
index 5bbee56..b42f23d 100644
--- a/arch/arm/boot/dts/stm32f746.dtsi
+++ b/arch/arm/boot/dts/stm32f746.dtsi
@@ -343,6 +343,8 @@
 			reg = <0x40023800 0x400>;
 			clocks = <&clk_hse>, <&clk_i2s_ckin>;
 			st,syscfg = <&pwrcfg>;
+			assigned-clocks = <&rcc 1 CLK_HSE_RTC>;
+			assigned-clock-rates = <1000000>;
 		};
 
 		dma1: dma-controller@...26000 {
-- 
1.9.1