linux-kernel - [PATCH v3 1/9] dt-bindings: gce: mt8195: Add CMDQ_SYNC_TOKEN_SECURE_THR

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Date: Fri, 22 Dec 2023 12:52:20 +0800
From: Jason-JH.Lin <jason-jh.lin@...iatek.com>
To: Jassi Brar <jassisinghbrar@...il.com>, Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Matthias Brugger
	<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Chun-Kuang Hu
	<chunkuang.hu@...nel.org>
CC: Conor Dooley <conor+dt@...nel.org>, Mauro Carvalho Chehab
	<mchehab@...nel.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-media@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
	Jason-ch Chen <jason-ch.chen@...iatek.com>, Johnson Wang
	<johnson.wang@...iatek.com>, "Jason-JH . Lin" <jason-jh.lin@...iatek.com>,
	Singo Chang <singo.chang@...iatek.com>, Nancy Lin <nancy.lin@...iatek.com>,
	Shawn Sung <shawn.sung@...iatek.com>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v3 1/9] dt-bindings: gce: mt8195: Add CMDQ_SYNC_TOKEN_SECURE_THR_EOF event id

There are 2 kind of GCE event signal:
- The SW token means: a GCE event signal triggered by SW drivers.
e.g. SW driver append a GCE command to set a GCE event after a specific
GCE command. Or SW driver use CPU to write a event id to GCE register to
trigger the GCE event corresponding to that event id.

- The HW event means: a GCE event signal triggered by HW engines.
e.g. When HW OVL fetches all the data in frame buffer, HW OVL will send
a frame done irq and also send a frame done GCE event via HW bus directly.

CMDQ_SYNC_TOKEN_SECURE_THR_EOF is a SW token event that is set in the
end of each cmdq secure pkt. It is used as a secure irq to notify
CMDQ driver in the normal world that GCE secure thread has completed
a secure cmd buffer in thee secure world.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
---
 include/dt-bindings/gce/mt8195-gce.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/dt-bindings/gce/mt8195-gce.h b/include/dt-bindings/gce/mt8195-gce.h
index dcfb302b8a5b..b6b3db82c381 100644
--- a/include/dt-bindings/gce/mt8195-gce.h
+++ b/include/dt-bindings/gce/mt8195-gce.h
@@ -800,6 +800,12 @@
 #define CMDQ_EVENT_WPE_VPP1_WPE_GCE_FRAME_DONE	969
 #define CMDQ_EVENT_WPE_VPP1_WPE_DONE_SYNC_OUT	970
 
+/*
+ * Notify normal CMDQ there are some secure task done,
+ * this token sync with secure world.
+ */
+#define CMDQ_SYNC_TOKEN_SECURE_THR_EOF			980
+
 #define CMDQ_EVENT_DP_TX_VBLANK_FALLING	994
 #define CMDQ_EVENT_DP_TX_VSC_FINISH	995
 
-- 
2.18.0