From: Anshul Dalal <anshuld@ti.com>
To: Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
"Santosh Shilimkar" <ssantosh@kernel.org>,
Rob Herring <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>,
"Anshul Dalal" <anshuld@ti.com>
Subject: [PATCH RFC] dt-bindings: arm: keystone: add boot_* mailboxes
Date: Tue, 11 Nov 2025 16:07:32 +0530 [thread overview]
Message-ID: <20251111-k3_syscon_add_boot_mailboxes-v1-1-529a27f21076@ti.com> (raw)
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 <anshuld@ti.com>
---
Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml
index 25a2b42105e541cb3c8ad12a0dfec1af038fa907..b5f48647a0f09bb930f052ea0f84a78525c925eb 100644
--- a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml
+++ b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml
@@ -51,15 +51,23 @@ properties:
minItems: 1
mbox-names:
+ minItems: 2
+ maxItems: 6
description: |
Specifies the mailboxes used to communicate with TI-SCI Controller
- made available from TI-SCI controller.
+ made available from TI-SCI controller. All boot_* mailboxes are used by
+ the first stage bootloader to load firmware for the device.
items:
- const: rx
- const: tx
+ - const: notify
+ - const: boot_rx
+ - const: boot_tx
+ - const: boot_notify
mboxes:
minItems: 2
+ maxItems: 6
ti,host-id:
$ref: /schemas/types.yaml#/definitions/uint32
---
base-commit: 1c353dc8d962de652bc7ad2ba2e63f553331391c
change-id: 20251105-k3_syscon_add_boot_mailboxes-8452bdd98962
Best regards,
--
Anshul Dalal <anshuld@ti.com>
next reply other threads:[~2025-11-11 10:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-11 10:37 Anshul Dalal [this message]
2025-11-11 10:52 ` Krzysztof Kozlowski
2025-11-12 5:49 ` Anshul Dalal
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