linux-kernel - [PATCH v1 1/1] irqchip/gic-v3: Enable Rockchip 3588001 erratum workaround for RK3588S

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Message-Id: <20230703164129.193991-1-sebastian.reichel@collabora.com>
Date:   Mon,  3 Jul 2023 18:41:29 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Chris Morgan <macromorgan@...mail.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        kernel@...labora.com
Subject: [PATCH v1 1/1] irqchip/gic-v3: Enable Rockchip 3588001 erratum workaround for RK3588S

Commit a8707f553884 ("irqchip/gic-v3: Add Rockchip 3588001 erratum
workaround") mentioned RK3588S (the slimmed down variant of RK3588)
being affected, but did not check for its compatible value. Thus the
quirk is not applied on RK3588S. Since the GIC ITS node got added to the
upstream DT, boards using RK3588S are no longer booting without this
quirk being applied.

Fixes: 06cdac8e8407 ("arm64: dts: rockchip: add GIC ITS support to rk3588")
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
I recently got a Rock 5A and noticed this issue. Apart from it, the Indiedroid
Nova should also be affected (I don't have that board). There are no other
upstream RK3588S boards at the moment.
---
 drivers/irqchip/irq-gic-v3-its.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 1994541eaef8..034ece9ac47c 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -4727,7 +4727,8 @@ static bool __maybe_unused its_enable_rk3588001(void *data)
 {
 	struct its_node *its = data;
 
-	if (!of_machine_is_compatible("rockchip,rk3588"))
+	if (!of_machine_is_compatible("rockchip,rk3588") &&
+	    !of_machine_is_compatible("rockchip,rk3588s"))
 		return false;
 
 	its->flags |= ITS_FLAGS_FORCE_NON_SHAREABLE;
-- 
2.40.1