Re: [PATCH 3/6] arm64: dts: ti: k3-j721e: Add support for MCAN nodes
From: Aswath Govindraju <hidden>
Date: 2021-07-21 07:48:47
Also in:
linux-arm-kernel, lkml
Hi Marc, On 20/07/21 8:24 pm, Marc Kleine-Budde wrote:
On 20.07.2021 19:46:39, Aswath Govindraju wrote:quoted
From: Faiz Abbas <redacted> Add support for 14 MCAN controllers in main domain and 2 MCAN controllers present in mcu domain. All the MCAN controllers support classic CAN messages as well as CAN_FD messages. Signed-off-by: Faiz Abbas <redacted> Signed-off-by: Aswath Govindraju <redacted> --- arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 196 ++++++++++++++++++ .../boot/dts/ti/k3-j721e-mcu-wakeup.dtsi | 28 +++ 2 files changed, 224 insertions(+)diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi index cf3482376c1e..4215b8e6785a 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi@@ -1940,4 +1940,200 @@ bus_freq = <1000000>; }; }; + + main_mcan0: can@2701000 { + compatible = "bosch,m_can"; + reg = <0x00 0x02701000 0x00 0x200>, + <0x00 0x02708000 0x00 0x8000>; + reg-names = "m_can", "message_ram"; + power-domains = <&k3_pds 156 TI_SCI_PD_EXCLUSIVE>; + clocks = <&k3_clks 156 1>, <&k3_clks 156 0>; + clock-names = "cclk", "hclk"; + interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "int0", "int1"; + bosch,mram-cfg = <0x0 0 0 32 0 0 1 1>;Are you intentionally only enabling 1 TX buffer?
I have used this configuration for testing. It can be increased to 32 if required. Is it better to set it to the maximum number of buffers ? Thanks, Aswath
Marc