linux-kernel - [PATCH 1/1] ARM: dts: stm32: Fix CAN RAM mapping on stm32mp157c

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Message-ID: <20191104143145.7053-1-christophe.roullier@st.com>
Date:   Mon, 4 Nov 2019 15:31:45 +0100
From:   Christophe Roullier <christophe.roullier@...com>
To:     <robh@...nel.org>, <davem@...emloft.net>, <joabreu@...opsys.com>,
        <mark.rutland@....com>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...com>, <peppe.cavallaro@...com>
CC:     <linux-stm32@...md-mailman.stormreply.com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <christophe.roullier@...com>, <andrew@...n.ch>
Subject: [PATCH  1/1] ARM: dts: stm32: Fix CAN RAM mapping on stm32mp157c

Split the 10Kbytes CAN message RAM to be able to use simultaneously
FDCAN1 and FDCAN2 instances.
First 5Kbytes are allocated to FDCAN1 and last 5Kbytes are used for
FDCAN2. To do so, set the offset to 0x1400 in mram-cfg for FDCAN2.

Fixes: d44d6e021301 ("ARM: dts: stm32: change CAN RAM mapping on stm32mp157c")
Signed-off-by: Christophe Roullier <christophe.roullier@...com>
---
 arch/arm/boot/dts/stm32mp157c.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index 9b11654a0a39..f98e0370c0bc 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -932,7 +932,7 @@
 			interrupt-names = "int0", "int1";
 			clocks = <&rcc CK_HSE>, <&rcc FDCAN_K>;
 			clock-names = "hclk", "cclk";
-			bosch,mram-cfg = <0x1400 0 0 32 0 0 2 2>;
+			bosch,mram-cfg = <0x0 0 0 32 0 0 2 2>;
 			status = "disabled";
 		};
 
@@ -945,7 +945,7 @@
 			interrupt-names = "int0", "int1";
 			clocks = <&rcc CK_HSE>, <&rcc FDCAN_K>;
 			clock-names = "hclk", "cclk";
-			bosch,mram-cfg = <0x0 0 0 32 0 0 2 2>;
+			bosch,mram-cfg = <0x1400 0 0 32 0 0 2 2>;
 			status = "disabled";
 		};
 
-- 
2.17.1