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X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Nov 2025 10:24:31.7675 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7c618fca-d758-4eb5-924e-08de21d5ab42 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.195];Helo=[flwvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000143.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR10MB4797 The bootloader on K3 devices makes use of mailboxes as per the ROM spec which might be different than one's available to the kernel (firmware spec). Therefore, this patch adds the missing mailbox entries to the DT binding to represent the mailboxes exposed by the hardware during boot for the purpose of loading the firmware. Signed-off-by: Anshul Dalal --- Changes in v3: - Drop [1/2] of the last patch series - Update existing example with boot_* mailboxes instead of adding a new one - Link to v2: https://lore.kernel.org/r/20251112-k3_syscon_add_boot_mailbox= es-v2-0-aebc1e47b391@ti.com Changes in v2: - Remove maxItems entry - Remove RFC tag from patch (added by mistake in v1) - Document the new mailboxes in mboxes instead of mbox-names - Provide example with all the mailboxes set - Update commit title to have "ti,sci" - Split into two patches - Link to v1: https://lore.kernel.org/r/20251111-k3_syscon_add_boot_mailbox= es-v1-1-529a27f21076@ti.com --- .../devicetree/bindings/arm/keystone/ti,sci.yaml | 19 +++++++++++++++= +--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml b/D= ocumentation/devicetree/bindings/arm/keystone/ti,sci.yaml index 25a2b42105e541cb3c8ad12a0dfec1af038fa907..be8a5b2b051b441884795059c70= 892910d981130 100644 --- a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml +++ b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml @@ -51,15 +51,27 @@ properties: minItems: 1 =20 mbox-names: + minItems: 2 description: | Specifies the mailboxes used to communicate with TI-SCI Controller made available from TI-SCI controller. items: - const: rx - const: tx + - const: notify + - const: boot_rx + - const: boot_tx + - const: boot_notify =20 mboxes: minItems: 2 + items: + - description: RX thread + - description: TX thread + - description: Notify thread + - description: boot stage RX thread + - description: boot stage TX thread + - description: boot stage Notify thread =20 ti,host-id: $ref: /schemas/types.yaml#/definitions/uint32 @@ -90,9 +102,10 @@ examples: - | pmmc: system-controller@2921800 { compatible =3D "ti,k2g-sci"; - mbox-names =3D "rx", "tx"; - mboxes =3D <&msgmgr 5 2>, - <&msgmgr 0 0>; + mbox-names =3D "rx", "tx", "notify", "boot_rx", "boot_tx", "boot_not= ify"; + mboxes =3D <&secure_proxy_mcu 8>, <&secure_proxy_mcu 6>, + <&secure_proxy_mcu 5>, <&secure_proxy_mcu 4>, + <&secure_proxy_mcu 5>, <&secure_proxy_sa3 5>; reg-names =3D "debug_messages"; reg =3D <0x02921800 0x800>; }; --- base-commit: 4427259cc7f7571a157fbc9b5011e1ef6fe0a4a8 change-id: 20251105-k3_syscon_add_boot_mailboxes-8452bdd98962 Best regards, --=20 Anshul Dalal