linux-kernel - [PATCH v5 01/10] dt-bindings: gce: mt8195: Add CMDQ_SYNC_TOKEN_SECURE_THR

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Message-ID: <20240403102602.32155-2-shawn.sung@mediatek.com>
Date: Wed, 3 Apr 2024 18:25:53 +0800
From: Shawn Sung <shawn.sung@...iatek.com>
To: CK Hu <ck.hu@...iatek.com>, Jassi Brar <jassisinghbrar@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>, Hsiao Chien Sung
	<shawn.sung@...iatek.com>, "Jason-JH . Lin" <jason-jh.lin@...iatek.com>,
	Houlong Wei <houlong.wei@...iatek.com>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>
Subject: [PATCH v5 01/10] dt-bindings: gce: mt8195: Add CMDQ_SYNC_TOKEN_SECURE_THR_EOF event id

From: "Jason-JH.Lin" <jason-jh.lin@...iatek.com>

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>
Signed-off-by: Hsiao Chien Sung <shawn.sung@...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 dcfb302b8a5bc..b6b3db82c381e 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