From: Florian Fainelli <f.fainelli@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
maxime@cerno.tech, dave.stevenson@raspberrypi.com,
maz@kernel.org, open list <linux-kernel@vger.kernel.org>,
dri-devel@lists.freedesktop.org, eric@anholt.net,
Rob Herring <robh+dt@kernel.org>,
bcm-kernel-feedback-list@broadcom.com,
linux-rpi-kernel@lists.infradead.org, tzimmermann@suse.de,
hverkuil-cisco@xs4all.nl, mchehab@kernel.org,
nsaenzjulienne@suse.de, linux-media@vger.kernel.org
Subject: [PATCH] Revert "ARM: dts: bcm2711: Add the BSC interrupt controller"
Date: Fri, 12 Feb 2021 11:11:04 -0800 [thread overview]
Message-ID: <20210212191104.2365912-1-f.fainelli@gmail.com> (raw)
As Dave reported:
This seems to have unintended side effects. GIC interrupt 117 is shared
between the standard I2C controllers (i2c-bcm2835) and the l2-intc block
handling the HDMI I2C interrupts.
There is not a great way to share an interrupt between an interrupt
controller using the chained IRQ handler which is an interrupt flow and
another driver like i2c-bcm2835 which uses an interrupt handler
(although it specifies IRQF_SHARED).
Simply revert this change for now which will mean that HDMI I2C will be
polled, like it was before.
Reported-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
arch/arm/boot/dts/bcm2711.dtsi | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 462b1dfb0385..720beec54d61 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -308,14 +308,6 @@ dvp: clock@7ef00000 {
#reset-cells = <1>;
};
- bsc_intr: interrupt-controller@7ef00040 {
- compatible = "brcm,bcm2711-l2-intc", "brcm,l2-intc";
- reg = <0x7ef00040 0x30>;
- interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
- interrupt-controller;
- #interrupt-cells = <1>;
- };
-
aon_intr: interrupt-controller@7ef00100 {
compatible = "brcm,bcm2711-l2-intc", "brcm,l2-intc";
reg = <0x7ef00100 0x30>;
@@ -362,8 +354,6 @@ ddc0: i2c@7ef04500 {
reg = <0x7ef04500 0x100>, <0x7ef00b00 0x300>;
reg-names = "bsc", "auto-i2c";
clock-frequency = <97500>;
- interrupt-parent = <&bsc_intr>;
- interrupts = <0>;
status = "disabled";
};
@@ -405,8 +395,6 @@ ddc1: i2c@7ef09500 {
reg = <0x7ef09500 0x100>, <0x7ef05b00 0x300>;
reg-names = "bsc", "auto-i2c";
clock-frequency = <97500>;
- interrupt-parent = <&bsc_intr>;
- interrupts = <1>;
status = "disabled";
};
};
--
2.25.1
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next reply other threads:[~2021-02-12 19:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-12 19:11 Florian Fainelli [this message]
2021-02-16 7:55 ` [PATCH] Revert "ARM: dts: bcm2711: Add the BSC interrupt controller" Maxime Ripard
2021-02-16 17:13 ` Nicolas Saenz Julienne
2021-02-17 1:12 ` Florian Fainelli
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