Re: [Patch v1 2/3] arm64: tegra: add node for tegra234 cpufreq

Jon Hunter
2022-03-18T08:39:45Z

On 16/03/2022 13:58, Sumit Gupta wrote:
> Adding cclpex node to represent Tegra234 cpufreq.
> Tegra234 uses some of the CRAB (Control Register Access Bus)
> registers for cpu frequency requests. These registers are
> memory mapped to CCPLEX_MMCRAB_ARM region. In this node, mapping
> the range of MMCRAB registers required only for cpu frequency info.
>
> Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
> ---
> arch/arm64/boot/dts/nvidia/tegra234.dtsi | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
> index aaace605bdaa..610207f3f967 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
> @@ -1258,6 +1258,13 @@
> };
> };
>
> + ccplex@e000000 {
> + compatible = "nvidia,tegra234-ccplex-cluster";
> + reg = <0x0 0x0e000000 0x0 0x5ffff>;
> + nvidia,bpmp = <&bpmp>;
> + status = "okay";
> + };
> +
> sram@40000000 {
> compatible = "nvidia,tegra234-sysram", "mmio-sram";
> reg = <0x0 0x40000000 0x0 0x80000>;

We need to add this compatible string to a DT binding doc somewhere.

Cheers
Jon

--
nvpublic