Re: [PATCH v8 9/9] arm64: dts: ti: Add wkup R5F nodes to pre-ram bootphase
From: Francesco Dolcini <francesco@dolcini.it>
Date: 2026-09-11 05:24:49
Also in:
linux-arm-kernel, lkml, llvm
Hello Markus On Thu, Sep 03, 2026 at 02:39:30PM +0200, Markus Schneider-Pargmann (TI) wrote:
For IO+DDR the wkup_r5fss0_core0 and the wkup_r5fss0_core0_lpm_metadata_region need to be accessed before RAM setup is done. These are used to read the lpm metadata region in which data is stored to resume. This needs to be done before RAM is in use to avoid overwriting data. Add the bootph-pre-ram flag to the wkup_r5fss0_core0 node in both ipc-firmware dtsi files and to the lpm metadata region nodes of the AM62A and AM62P boards. The board level bootph-pre-ram flag of k3-am62d2-evm.dts becomes redundant with the dtsi-wide flag and is dropped. Signed-off-by: Markus Schneider-Pargmann (TI) <msp@baylibre.com>
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quoted hunk ↗ jump to hunk
diff --git a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi index 45ab9d947b3a..8976c0424cd1 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi@@ -184,6 +184,7 @@ wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { compatible = "shared-dma-pool"; reg = <0x00 0x9ca08000 0x00 0x1000>; no-map; + bootph-pre-ram; };
verdin-am62p has the various bootph tags only in the U-Boot dtsi (k3-am62p5-verdin-wifi-dev-u-boot.dtsi) as of now, I am not convinced it is a good idea to just add this single one here. Francesco