Re: [PATCH v9 8/9] arm64: dts: ti: k3-am62p: Split r5f memory region
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From: Stefano Radaelli <hidden>
Date: 2026-09-18 11:47:49
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On Fri, Sep 18, 2026 at 11:17:52AM +0200, Markus Schneider-Pargmann (TI) wrote:
quoted hunk ↗ jump to hunk
Split the firmware memory region in more specific parts so it is better described where to find which information. Specifically the LPM metadata region is important as bootloader software like U-Boot has to know where that data is to be able to read that data. Reviewed-by: Bryan Brattlof <redacted> Reviewed-by: Kendall Willis <redacted> Signed-off-by: Markus Schneider-Pargmann (TI) <msp@baylibre.com> --- .../boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi | 10 ++++++-- arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi | 28 ++++++++++++++++++++-- arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 28 ++++++++++++++++++++-- arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi | 28 ++++++++++++++++++++-- 4 files changed, 86 insertions(+), 8 deletions(-)diff --git a/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi index 5d7f701420e2..84dfbfd1986c 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi@@ -44,8 +44,14 @@ &wkup_r5fss0 { &wkup_r5fss0_core0 { mboxes = <&mailbox0_cluster0 &mbox_r5_0>; memory-region = <&wkup_r5fss0_core0_dma_memory_region>, - <&wkup_r5fss0_core0_memory_region>; - memory-region-names = "dma", "firmware"; + <&wkup_r5fss0_core0_ipc_region>, + <&wkup_r5fss0_core0_lpm_fs_stub_region>, + <&wkup_r5fss0_core0_lpm_metadata_region>, + <&wkup_r5fss0_core0_lpm_rest_region>, + <&wkup_r5fss0_core0_dm_region>; + memory-region-names = "dma", "ipc", "lpm-stub", + "lpm-metadata", "lpm-context", + "dm-firmware"; status = "okay"; };diff --git a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi index 8a5ff5c45757..45ab9d947b3a 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi@@ -168,9 +168,33 @@ wkup_r5fss0_core0_dma_memory_region: memory@9c800000 { no-map; }; - wkup_r5fss0_core0_memory_region: memory@9c900000 { + wkup_r5fss0_core0_ipc_region: memory@9c900000 { compatible = "shared-dma-pool"; - reg = <0x00 0x9c900000 0x00 0x01d08000>; + reg = <0x00 0x9c900000 0x00 0x100000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_fs_stub_region: memory@9ca00000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca00000 0x00 0x8000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca08000 0x00 0x1000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_rest_region: memory@9ca09000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca09000 0x00 0x97000>; + no-map; + }; + + wkup_r5fss0_core0_dm_region: memory@9caa0000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9caa0000 0x00 0x1b68000>; no-map; }; };diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts index b8af9ec81b0c..bb027c65eddd 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts@@ -55,9 +55,33 @@ wkup_r5fss0_core0_dma_memory_region: memory@9c800000 { no-map; }; - wkup_r5fss0_core0_memory_region: memory@9c900000 { + wkup_r5fss0_core0_ipc_region: memory@9c900000 { compatible = "shared-dma-pool"; - reg = <0x00 0x9c900000 0x00 0x1d08000>; + reg = <0x00 0x9c900000 0x00 0x100000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_fs_stub_region: memory@9ca00000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca00000 0x00 0x8000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca08000 0x00 0x1000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_rest_region: memory@9ca09000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca09000 0x00 0x97000>; + no-map; + }; + + wkup_r5fss0_core0_dm_region: memory@9caa0000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9caa0000 0x00 0x1b68000>; no-map; };diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi b/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi index 3d1a2c5bc464..31f670fdd91d 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi@@ -69,9 +69,33 @@ wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9c800000 { no-map; }; - wkup_r5fss0_core0_memory_region: r5f-memory@9c900000 { + wkup_r5fss0_core0_ipc_region: r5f-memory@9c900000 { compatible = "shared-dma-pool"; - reg = <0x00 0x9c900000 0x00 0x01d08000>; + reg = <0x00 0x9c900000 0x00 0x100000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_fs_stub_region: r5f-memory@9ca00000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca00000 0x00 0x8000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_metadata_region: r5f-memory@9ca08000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca08000 0x00 0x1000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_rest_region: r5f-memory@9ca09000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9ca09000 0x00 0x97000>; + no-map; + }; + + wkup_r5fss0_core0_dm_region: r5f-memory@9caa0000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9caa0000 0x00 0x1b68000>; no-map; };-- 2.55.0
Reviewed-by: Stefano Radaelli <redacted> Best Regards, Stefano