From: Stefano Radaelli <stefano.radaelli21@gmail.com>
To: "Markus Schneider-Pargmann (TI)" <msp@baylibre.com>
Cc: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>, Judith Mendez <jm@ti.com>,
Daniel Schultz <d.schultz@phytec.de>, Andrew Davis <afd@ti.com>,
Siddharth Vadapalli <s-vadapalli@ti.com>,
Paresh Bhagat <p-bhagat@ti.com>, Bryan Brattlof <bb@ti.com>,
Jai Luthra <jai.luthra@ideasonboard.com>,
Devarsh Thakkar <devarsht@ti.com>,
Beleswar Padhi <b-padhi@ti.com>,
Francesco Dolcini <francesco.dolcini@toradex.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Vishal Mahaveer <vishalm@ti.com>,
Kevin Hilman <khilman@baylibre.com>,
Sebin Francis <sebin.francis@ti.com>,
Kendall Willis <k-willis@ti.com>, Akashdeep Kaur <a-kaur@ti.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
Hari Nagalla <hnagalla@ti.com>
Subject: Re: [PATCH v9 8/9] arm64: dts: ti: k3-am62p: Split r5f memory region
Date: Fri, 18 Sep 2026 13:47:35 +0200 [thread overview]
Message-ID: <aq0k110MlZs4-Frx@Lord-Beerus.station> (raw)
In-Reply-To: <20260918-topic-am62a-ioddr-dt-v6-19-v9-8-40972ef1f663@baylibre.com>
On Fri, Sep 18, 2026 at 11:17:52AM +0200, Markus Schneider-Pargmann (TI) wrote:
> 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 <bb@ti.com>
> Reviewed-by: Kendall Willis <k-willis@ti.com>
> 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 <stefano.r@variscite.com>
Best Regards,
Stefano
next prev parent reply other threads:[~2026-09-18 11:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-18 9:17 [PATCH v9 0/9] arm64: dts: ti: Split wkup R5F memory region for IO+DDR resume Markus Schneider-Pargmann (TI)
2026-09-18 9:17 ` [PATCH v9 1/9] arm64: dts: ti: k3-am62a-phycore-som: Fix wkup R5F memory region size Markus Schneider-Pargmann (TI)
2026-09-18 11:31 ` Wadim Egorov
2026-09-18 9:17 ` [PATCH v9 2/9] arm64: dts: ti: k3-am62d2-evm: " Markus Schneider-Pargmann (TI)
2026-09-18 9:17 ` [PATCH v9 3/9] arm64: dts: ti: k3-am62a7-sk: " Markus Schneider-Pargmann (TI)
2026-09-18 9:17 ` [PATCH v9 4/9] arm64: dts: ti: k3-am62p-verdin: " Markus Schneider-Pargmann (TI)
2026-09-18 9:17 ` [PATCH v9 5/9] arm64: dts: ti: k3-am62p5-sk: " Markus Schneider-Pargmann (TI)
2026-09-18 9:17 ` [PATCH v9 6/9] arm64: dts: ti: var-som-am62p: " Markus Schneider-Pargmann (TI)
2026-09-18 9:17 ` [PATCH v9 7/9] arm64: dts: ti: k3-am62a: Split r5f memory region Markus Schneider-Pargmann (TI)
2026-09-18 9:40 ` sashiko-bot
2026-09-24 14:55 ` Nishanth Menon
2026-09-29 9:55 ` Markus Schneider-Pargmann
2026-09-18 9:17 ` [PATCH v9 8/9] arm64: dts: ti: k3-am62p: " Markus Schneider-Pargmann (TI)
2026-09-18 9:35 ` sashiko-bot
2026-09-18 11:47 ` Stefano Radaelli [this message]
2026-09-18 9:17 ` [PATCH v9 9/9] arm64: dts: ti: Add wkup R5F nodes to pre-ram bootphase Markus Schneider-Pargmann (TI)
2026-09-18 11:48 ` Stefano Radaelli
2026-10-02 1:00 ` [PATCH v9 0/9] arm64: dts: ti: Split wkup R5F memory region for IO+DDR resume Nishanth Menon
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