linux-kernel - [PATCH 2/2] staging: vchiq_arm: Use bcm2711 compatible string for bcm2711-based RPi

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Date:   Tue, 15 Mar 2022 16:09:29 -0400
From:   Adrien Thierry <athierry@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Adrien Thierry <athierry@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Stefan Wahren <stefan.wahren@...e.com>,
        devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Gaston Gonzalez <gascoar@...il.com>,
        Ojaswin Mujoo <ojaswin98@...il.com>,
        linux-staging@...ts.linux.dev
Subject: [PATCH 2/2] staging: vchiq_arm: Use bcm2711 compatible string for bcm2711-based RPi

Use bcm2711 compatible string in vchiq driver and device tree for
bcm2711-based Raspberry Pi (Raspberry Pi 4). This is consistent with
what the downstream device tree uses, and allows running the vchiq
driver on the upstream kernel with the downstream device tree.

Signed-off-by: Adrien Thierry <athierry@...hat.com>
---
 arch/arm/boot/dts/bcm2711-rpi.dtsi                           | 1 +
 .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c    | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711-rpi.dtsi b/arch/arm/boot/dts/bcm2711-rpi.dtsi
index ca266c5d9f9b..c868d1dcaba7 100644
--- a/arch/arm/boot/dts/bcm2711-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi
@@ -70,5 +70,6 @@ blconfig: nvram@0 {
 };
 
 &vchiq {
+	compatible = "brcm,bcm2711-vchiq";
 	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
 };
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 3a2e4582db8e..136c664132f4 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -81,6 +81,10 @@ static struct vchiq_drvdata bcm2836_drvdata = {
 	.cache_line_size = 64,
 };
 
+static struct vchiq_drvdata bcm2711_drvdata = {
+	.cache_line_size = 64,
+};
+
 struct vchiq_arm_state {
 	/* Keepalive-related data */
 	struct task_struct *ka_thread;
@@ -1748,6 +1752,7 @@ void vchiq_platform_conn_state_changed(struct vchiq_state *state,
 static const struct of_device_id vchiq_of_match[] = {
 	{ .compatible = "brcm,bcm2835-vchiq", .data = &bcm2835_drvdata },
 	{ .compatible = "brcm,bcm2836-vchiq", .data = &bcm2836_drvdata },
+	{ .compatible = "brcm,bcm2711-vchiq", .data = &bcm2711_drvdata },
 	{},
 };
 MODULE_DEVICE_TABLE(of, vchiq_of_match);
-- 
2.35.1