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Wed, 29 Apr 2026 06:22:52 -0700 (PDT) From: "Markus Schneider-Pargmann (TI)" Date: Wed, 29 Apr 2026 15:22:08 +0200 Subject: [PATCH v4 1/4] arm64: dts: ti: k3-am62a7-sk: Split r5f memory region Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260429-topic-am62a-ioddr-dt-v6-19-v4-1-fc27d6ac753c@baylibre.com> References: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> In-Reply-To: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Suman Anna , Nishanth Menon , Vignesh Raghavendra , Tero Kristo Cc: Vishal Mahaveer , Kevin Hilman , Dhruva Gole , Sebin Francis , Kendall Willis , Akashdeep Kaur , linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Markus Schneider-Pargmann (TI)" X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2273; i=msp@baylibre.com; h=from:subject:message-id; bh=URQQ9Z6jTAoqQ+MLUzm/WhCvSZ5DsHJ0Gwd/k9oBwGc=; b=owGbwMvMwCXWejAsc4KoVzDjabUkhsxPbLwNny5P2dS6bpNoeqX514OlZ9ZZruoR0pyy9Hnw0 9UMJWumdJSyMIhxMciKKbJ0Joam/ZffeSx50bLNMHNYmUCGMHBxCsBETkow/FN5k3/4zoRlaWFT DvWbrWKIKDXhdGH14/yWsdHO46Z/9UFGhinX13w+NffX9meK1xseeKgYpE2TmT67zlLH+u0jc4m /3FwA X-Developer-Key: i=msp@baylibre.com; a=openpgp; fpr=BADD88DB889FDC3E8A3D5FE612FA6A01E0A45B41 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. Signed-off-by: Markus Schneider-Pargmann (TI) --- arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 40 +++++++++++++++++++++++++++++= ++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/= ti/k3-am62a7-sk.dts index c1e9067b3bdd5ab0591541d4685bb17a5dac4f65..6f2ee93c7be141ee5ae3f1e3324= d3a060db069f6 100644 --- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts @@ -59,9 +59,33 @@ wkup_r5fss0_core0_dma_memory_region: memory@9c800000 { no-map; }; =20 - wkup_r5fss0_core0_memory_region: memory@9c900000 { + wkup_r5fss0_core0_ipc_region: memory@9c900000 { compatible =3D "shared-dma-pool"; - reg =3D <0x00 0x9c900000 0x00 0xf00000>; + reg =3D <0x00 0x9c900000 0x00 0x100000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_fs_stub_region: memory@9ca00000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9ca00000 0x00 0x8000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9ca08000 0x00 0x1000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_rest_region: memory@9ca09000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9ca09000 0x00 0x97000>; + no-map; + }; + + wkup_r5fss0_core0_dm_region: memory@9caa0000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9caa0000 0x00 0xd60000>; no-map; }; =20 @@ -933,3 +957,15 @@ &mcu_uart0 { }; =20 #include "k3-am62a-ti-ipc-firmware.dtsi" + +&wkup_r5fss0_core0 { + memory-region =3D <&wkup_r5fss0_core0_dma_memory_region>, + <&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 =3D "dma", "ipc", "lpm-stub", + "lpm-metadata", "lpm-context", + "dm-firmware"; +}; --=20 2.53.0 From nobody Tue Jun 16 19:40:09 2026 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A8423FD152 for ; 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Wed, 29 Apr 2026 06:22:54 -0700 (PDT) Received: from localhost ([2001:4090:a246:83ca:1917:a47e:1872:2063]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-447b72176fesm5619258f8f.17.2026.04.29.06.22.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 06:22:54 -0700 (PDT) From: "Markus Schneider-Pargmann (TI)" Date: Wed, 29 Apr 2026 15:22:09 +0200 Subject: [PATCH v4 2/4] arm64: dts: ti: k3-am62p5-sk: Split r5f memory region Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260429-topic-am62a-ioddr-dt-v6-19-v4-2-fc27d6ac753c@baylibre.com> References: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> In-Reply-To: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Suman Anna , Nishanth Menon , Vignesh Raghavendra , Tero Kristo Cc: Vishal Mahaveer , Kevin Hilman , Dhruva Gole , Sebin Francis , Kendall Willis , Akashdeep Kaur , linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Markus Schneider-Pargmann (TI)" X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2273; i=msp@baylibre.com; h=from:subject:message-id; bh=NwbSyCiqLGeKdK60gi64/kirGNSyXATr0VwfsBib500=; b=owGbwMvMwCXWejAsc4KoVzDjabUkhsxPbMIsItsZVnyaFb/TiMfrZO/B/U6/O9SX3rbavuO4n t+Omj33OkpZGMS4GGTFFFk6E0PT/svvPJa8aNlmmDmsTCBDGLg4BWAife6MDNtz53g/8lr6/NHO e9t+GH5NdhO5d2fe4tD8ms8/rMI4Fp9gZLjU/mf70c9XOZiXJXZ+tApXMrfvk6mWNL+uUho1yU6 +mBsA X-Developer-Key: i=msp@baylibre.com; a=openpgp; fpr=BADD88DB889FDC3E8A3D5FE612FA6A01E0A45B41 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. Signed-off-by: Markus Schneider-Pargmann (TI) --- arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 40 +++++++++++++++++++++++++++++= ++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/= ti/k3-am62p5-sk.dts index b770ed82be9d8f5827c49ed871351a6423db8026..e67489a178f2a2caedf1306e1c1= c9dd6a95745e6 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; }; =20 - wkup_r5fss0_core0_memory_region: memory@9c900000 { + wkup_r5fss0_core0_ipc_region: memory@9c900000 { compatible =3D "shared-dma-pool"; - reg =3D <0x00 0x9c900000 0x00 0xf00000>; + reg =3D <0x00 0x9c900000 0x00 0x100000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_fs_stub_region: memory@9ca00000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9ca00000 0x00 0x8000>; + no-map; + }; + + wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { + compatible =3D "shared-dma-pool"; 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a=openpgp-sha256; l=1183; i=msp@baylibre.com; h=from:subject:message-id; bh=S9PhpLFx+N3VMs13TwHZ1Fz84zCZTEwqsIfi6+XGGtw=; b=owGbwMvMwCXWejAsc4KoVzDjabUkhsxPbFJVk2Y4bps8v5vpQ4TVzSPWh1bZq7dd2XBPNJfDT EBcSti2o5SFQYyLQVZMkaUzMTTtv/zOY8mLlm2GmcPKBDKEgYtTACbCPJuRYe2Gp/f2hhkFbM3I lt+4wjQkM2V+WMzTmR4mJv7vLW8FOjD8lWVjULp38e6GqV6HVFawCt+4ubqTifeU7z+2OJHGJdm 1PAA= X-Developer-Key: i=msp@baylibre.com; a=openpgp; fpr=BADD88DB889FDC3E8A3D5FE612FA6A01E0A45B41 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. Signed-off-by: Markus Schneider-Pargmann (TI) --- arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/= ti/k3-am62a7-sk.dts index 6f2ee93c7be141ee5ae3f1e3324d3a060db069f6..5155f093437f35d815b2bf62429= b57c9d8672290 100644 --- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts @@ -75,6 +75,7 @@ wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { compatible =3D "shared-dma-pool"; reg =3D <0x00 0x9ca08000 0x00 0x1000>; no-map; + bootph-pre-ram; }; =20 wkup_r5fss0_core0_lpm_rest_region: memory@9ca09000 { @@ -968,4 +969,5 @@ &wkup_r5fss0_core0 { memory-region-names =3D "dma", "ipc", "lpm-stub", "lpm-metadata", "lpm-context", "dm-firmware"; + bootph-pre-ram; }; --=20 2.53.0 From nobody Tue Jun 16 19:40:09 2026 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 612963FE35A for ; 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Wed, 29 Apr 2026 06:22:56 -0700 (PDT) Received: from localhost ([2001:4090:a246:83ca:1917:a47e:1872:2063]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-447b3d4843bsm5752703f8f.7.2026.04.29.06.22.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 06:22:56 -0700 (PDT) From: "Markus Schneider-Pargmann (TI)" Date: Wed, 29 Apr 2026 15:22:11 +0200 Subject: [PATCH v4 4/4] arm64: dts: ti: k3-am62p5-sk: Add r5f nodes to pre-ram bootphase Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260429-topic-am62a-ioddr-dt-v6-19-v4-4-fc27d6ac753c@baylibre.com> References: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> In-Reply-To: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Suman Anna , Nishanth Menon , Vignesh Raghavendra , Tero Kristo Cc: Vishal Mahaveer , Kevin Hilman , Dhruva Gole , Sebin Francis , Kendall Willis , Akashdeep Kaur , linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Markus Schneider-Pargmann (TI)" X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1183; i=msp@baylibre.com; h=from:subject:message-id; bh=VsaP4LCm9vj+GPBKWc9GbqkMJjZILMOds/rJOobS64k=; b=owGbwMvMwCXWejAsc4KoVzDjabUkhsxPbIo2lfKnvyd5e3KfnbSlfZnmWTaubknzS18bTirrP G3daDS7o5SFQYyLQVZMkaUzMTTtv/zOY8mLlm2GmcPKBDKEgYtTACbCs5/hr+C8JRf/f9h62W/S 5pfTLq3Xdxbrk7F3a97vFxwtUWr1SYrhv+8pgftnGGb9OrxftfTKlucSV5xcjrV61ucsFq/0rHQ 4xQkA X-Developer-Key: i=msp@baylibre.com; a=openpgp; fpr=BADD88DB889FDC3E8A3D5FE612FA6A01E0A45B41 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. Signed-off-by: Markus Schneider-Pargmann (TI) --- arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/= ti/k3-am62p5-sk.dts index e67489a178f2a2caedf1306e1c1c9dd6a95745e6..b4a4e427637bb4d5ca408d29234= b95fe7e69d006 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts @@ -71,6 +71,7 @@ wkup_r5fss0_core0_lpm_metadata_region: memory@9ca08000 { compatible =3D "shared-dma-pool"; reg =3D <0x00 0x9ca08000 0x00 0x1000>; no-map; + bootph-pre-ram; }; =20 wkup_r5fss0_core0_lpm_rest_region: memory@9ca09000 { @@ -879,4 +880,5 @@ &wkup_r5fss0_core0 { memory-region-names =3D "dma", "ipc", "lpm-stub", "lpm-metadata", "lpm-context", "dm-firmware"; + bootph-pre-ram; }; --=20 2.53.0