RE: [PATCH v3 7/9] arm64: dts: renesas: rzg3s-smarc-som: Update dma-ranges for PCIe

Biju Das
2025-07-07T09:18:23Z

Hi Claudiu,

> -----Original Message-----
> From: Claudiu <claudiu.beznea@tuxon.dev>
> Sent: 04 July 2025 17:14
> Subject: [PATCH v3 7/9] arm64: dts: renesas: rzg3s-smarc-som: Update dma-ranges for PCIe
>
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> The first 128MB of memory is reserved on this board for secure area.
> Update the PCIe dma-ranges property to reflect this.

I see R-Car PCIe dma-ranges[1] and [2] maps all possible DDR area supported by the SoC?
Do we need to make board specific as well there?

[1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/arch/arm64/boot/dts/renesas/r8a774e1.dtsi?h=next-20250704#n2487
[2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/arch/arm64/boot/dts/renesas/salvator-common.dtsi?h=next-20250704

Cheers,
Biju

>
> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v3:
> - collected tags
>
> Changes in v2:
> - none, this patch is new
>
> arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-
> smarc-som.dtsi
> index 39845faec894..1b03820a6f02 100644
> --- a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
> +++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
> @@ -214,6 +214,11 @@ &sdhi2 {
> };
> #endif
>
> +&pcie {
> + /* First 128MB is reserved for secure area. */
> + dma-ranges = <0x42000000 0 0x48000000 0 0x48000000 0x0 0x38000000>; };
> +
> &pinctrl {
> #if SW_CONFIG3 == SW_ON
> eth0-phy-irq-hog {
> --
> 2.43.0
>