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Wed, 16 Sep 2026 03:17:49 -0700 (PDT) Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=4294f4665fca826925ab73fbe6c2302da13aa0714ec0f2a34bb309cea55b; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Wed, 16 Sep 2026 12:17:42 +0200 Message-Id: Cc: "Nishanth Menon" , "Vignesh Raghavendra" , "Tero Kristo" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Nathan Chancellor" , "Nick Desaulniers" , "Bill Wendling" , "Justin Stitt" , "Judith Mendez" , "Daniel Schultz" , "Andrew Davis" , "Siddharth Vadapalli" , "Paresh Bhagat" , "Bryan Brattlof" , "Jai Luthra" , "Devarsh Thakkar" , "Beleswar Padhi" , "Francesco Dolcini" , "Stefano Radaelli" , "Nick Desaulniers" , "Vishal Mahaveer" , "Kevin Hilman" , "Sebin Francis" , "Kendall Willis" , "Akashdeep Kaur" , , , , , "Hari Nagalla" Subject: Re: [PATCH v8 9/9] arm64: dts: ti: Add wkup R5F nodes to pre-ram bootphase From: "Markus Schneider-Pargmann" To: "Francesco Dolcini" , "Markus Schneider-Pargmann (TI)" X-Mailer: aerc 0.21.0-146-gb5c16ebe1835 References: <20260903-topic-am62a-ioddr-dt-v6-19-v8-0-74c650dfdea6@baylibre.com> <20260903-topic-am62a-ioddr-dt-v6-19-v8-9-74c650dfdea6@baylibre.com> <20260911052428.GB5377@francesco-nb> In-Reply-To: <20260911052428.GB5377@francesco-nb> --4294f4665fca826925ab73fbe6c2302da13aa0714ec0f2a34bb309cea55b Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Hi Francesco, On Fri Sep 11, 2026 at 7:24 AM CEST, Francesco Dolcini wrote: > 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. >>=20 >> 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. >>=20 >> The board level bootph-pre-ram flag of k3-am62d2-evm.dts becomes >> redundant with the dtsi-wide flag and is dropped. >>=20 >> Signed-off-by: Markus Schneider-Pargmann (TI) > ... > >> diff --git a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi b/arch/arm64/bo= ot/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@9ca080= 00 { >> compatible =3D "shared-dma-pool"; >> reg =3D <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. I don't see any bootph-* flags for any of the related memory regions in k3-am62p5-verdin-wifi-dev-u-boot.dtsi. Is it in a different dtsi? In general I am counting 72 bootph-* flags in the upstream devicetrees: git grep bootph- | grep 'am62p' | sed 's/:.*//g' | sort | uniq -c 38 arch/arm64/boot/dts/ti/k3-am62p5-sk.dts 4 arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi 9 arch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts 3 arch/arm64/boot/dts/ti/k3-am62p.dtsi 14 arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi 2 arch/arm64/boot/dts/ti/k3-am62p-j722s-common-mcu.dtsi 2 arch/arm64/boot/dts/ti/k3-am62p-j722s-common-wakeup.dtsi Best Markus --4294f4665fca826925ab73fbe6c2302da13aa0714ec0f2a34bb309cea55b Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKMEABYKAEsWIQSJYVVm/x+5xmOiprOFwVZpkBVKUwUCaqpsxhsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMiwyLDIRHG1zcEBiYXlsaWJyZS5jb20ACgkQhcFWaZAVSlPF ZAD/eDJUC404z4tekZfsmiBsSdeLivl6qN7wKJXrKvbZT8oA+wcDLzFFZE77sGVB 8TuajZIIVN4aNTNdZ3YIBLPrhFkO =F8Zw -----END PGP SIGNATURE----- --4294f4665fca826925ab73fbe6c2302da13aa0714ec0f2a34bb309cea55b--