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Message-ID: <20190830111810.GE23902@ulmo>
Date: Fri, 30 Aug 2019 13:18:10 +0200
From: Thierry Reding <thierry.reding@...il.com>
To: Krishna Reddy <vdumpa@...dia.com>
Cc: linux-arm-kernel@...ts.infradead.org,
iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org, treding@...dia.com, yhsu@...dia.com,
snikam@...dia.com, praithatha@...dia.com, talho@...dia.com,
avanbrunt@...dia.com, thomasz@...dia.com, olof@...om.net,
jtukkinen@...dia.com, mperttunen@...dia.com
Subject: Re: [PATCH 5/7] arm64: tegra: Add Memory controller DT node on T194
On Thu, Aug 29, 2019 at 03:47:05PM -0700, Krishna Reddy wrote:
> Add Memory controller DT node on T194 and enable it.
> This patch is a prerequisite for SMMU enable on T194.
>
> Signed-off-by: Krishna Reddy <vdumpa@...dia.com>
> ---
> arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 4 ++++
> arch/arm64/boot/dts/nvidia/tegra194.dtsi | 7 +++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
> index 62e07e11..4b3441b 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi
> @@ -47,6 +47,10 @@
> };
> };
>
> + memory-controller@...0000 {
> + status = "okay";
> + };
> +
> serial@...0000 {
> status = "okay";
> };
> diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> index adebbbf..d906958 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> @@ -6,6 +6,7 @@
> #include <dt-bindings/reset/tegra194-reset.h>
> #include <dt-bindings/power/tegra194-powergate.h>
> #include <dt-bindings/thermal/tegra194-bpmp-thermal.h>
> +#include <dt-bindings/memory/tegra186-mc.h>
>
> / {
> compatible = "nvidia,tegra194";
> @@ -130,6 +131,12 @@
> };
> };
>
> + memory-controller@...0000 {
> + compatible = "nvidia,tegra186-mc";
I think we need to make this "nvidia,tegra194-mc" and then enhance the
Tegra186 driver to match on that compatible string.
Nothing to worry about just yet and I can make that change when
applying.
Thierry
> + reg = <0x02c00000 0xb0000>;
> + status = "disabled";
> + };
> +
> uarta: serial@...0000 {
> compatible = "nvidia,tegra194-uart", "nvidia,tegra20-uart";
> reg = <0x03100000 0x40>;
> --
> 2.1.4
>
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