Re: [PATCH 1/2] arm64: dts: ti: k3-am62p: Add MCU SRAM node
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From: Kumar, Udit <hidden>
Date: 2026-09-30 03:57:31
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On 9/28/2026 8:52 AM, Sai Sree Kartheek Adivi wrote:
From: Hari Nagalla <redacted> AM62P devices have two banks of 256KB each SRAM in MCU domain. This memory is typically used by MCU R5 firmware for low latency accesses.
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Signed-off-by: Hari Nagalla <redacted> Signed-off-by: Judith Mendez <jm@ti.com> Signed-off-by: Sai Sree Kartheek Adivi <redacted> --- .../arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+)diff --git a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi index 2394a4fb5a94c..278404cadcd98 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi@@ -6,6 +6,18 @@ */ &cbass_mcu { + mcu_ram: sram@79100000 { + compatible = "mmio-sram"; + reg = <0x00 0x79100000 0x00 0x80000>; + ranges = <0x00 0x00 0x79100000 0x80000>; + #address-cells = <1>; + #size-cells = <1>; +
commit message says, 2 banks of 256Kb, Here you have only 1 block. Please add description, why you are adding 1 block only
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+ mcu1-sram@0 { + reg = <0x0 0x80000>; + };
what is use of this ?,
If you really need this then, please make it block of 256Kb (something
like below)
mcu-sram-0 {
reg = <0x0 0x40000>;
};
mcu-sram-1 {
reg = <0x40000 0x40000>;
};
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+ }; + mcu_pmx0: pinctrl@4084000 { compatible = "pinctrl-single"; reg = <0x00 0x04084000 0x00 0x88>;