Re: [PATCH v3 7/9] arm64: dts: renesas: rzg3s-smarc-som: Update dma-ranges for PCIe
From: Bjorn Helgaas <helgaas@kernel.org>
Date: 2025-07-08 16:55:42
Also in:
linux-arm-kernel, linux-clk, linux-pci, linux-renesas-soc, lkml
On Fri, Jul 04, 2025 at 07:14:07PM +0300, Claudiu wrote:
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.
Can we include a sentence or two about what the "secure area" means? I don't know how to connect this with anything in the driver.
quoted hunk ↗ jump to hunk
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