mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 23:12:32 +00:00
17a627ec82
Backport [1] and fix [2] hardware buffer management. Also fix the IRQ storm
caused by a misconfiguration of the PCA9538 interrupt pin [3].
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/arch/arm/boot/dts/armada-385-turris-omnia.dts?id=018b88eee1a2efda26ed2f09aab33ccdc40ef18f
[2] https://lore.kernel.org/linux-arm-kernel/20210217153038.1068170-1-rsalvaterra@gmail.com/
[3] https://lore.kernel.org/linux-arm-kernel/20210220231144.32325-1-kabel@kernel.org/
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
(cherry picked from commit 6fe6b631ef)
65 lines
2.6 KiB
Diff
65 lines
2.6 KiB
Diff
From: "Marek Behún" <kabel@kernel.org>
|
|
To: Gregory CLEMENT <gregory.clement@bootlin.com>
|
|
Cc: "Marek Behún" <kabel@kernel.org>, Rui Salvaterra <rsalvaterra@gmail.com>, "Uwe Kleine-König" <uwe@kleine-koenig.org>, linux-arm-kernel@lists.infradead.org, Andrew Lunn <andrew@lunn.ch>, stable@vger.kernel.org
|
|
Subject: [PATCH mvebu-dt] ARM: dts: turris-omnia: configure LED[2]/INTn pin as interrupt pin
|
|
Date: Sun, 21 Feb 2021 00:11:44 +0100
|
|
Message-Id: <20210220231144.32325-1-kabel@kernel.org>
|
|
X-Mailer: git-send-email 2.26.2
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Use the `marvell,reg-init` DT property to configure the LED[2]/INTn pin
|
|
of the Marvell 88E1514 ethernet PHY on Turris Omnia into interrupt mode.
|
|
|
|
Without this the pin is by default in LED[2] mode, and the Marvell PHY
|
|
driver configures LED[2] into "On - Link, Blink - Activity" mode.
|
|
|
|
This fixes the issue where the pca9538 GPIO/interrupt controller (which
|
|
can't mask interrupts in HW) received too many interrupts and after a
|
|
time started ignoring the interrupt with error message:
|
|
IRQ 71: nobody cared
|
|
|
|
There is a work in progress to have the Marvell PHY driver support
|
|
parsing PHY LED nodes from OF and registering the LEDs as Linux LED
|
|
class devices. Once this is done the PHY driver can also automatically
|
|
set the pin into INTn mode if it does not find LED[2] in OF.
|
|
|
|
Until then, though, we fix this via `marvell,reg-init` DT property.
|
|
|
|
Signed-off-by: Marek Behún <kabel@kernel.org>
|
|
Reported-by: Rui Salvaterra <rsalvaterra@gmail.com>
|
|
Fixes: 26ca8b52d6e1 ("ARM: dts: add support for Turris Omnia")
|
|
Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
|
|
Cc: linux-arm-kernel@lists.infradead.org
|
|
Cc: Andrew Lunn <andrew@lunn.ch>
|
|
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
|
|
Cc: <stable@vger.kernel.org>
|
|
|
|
---
|
|
|
|
This patch fixes bug introduced with the commit that added Turris
|
|
Omnia's DTS (26ca8b52d6e1), but will not apply cleanly because there is
|
|
commit 8ee4a5f4f40d which changed node name and node compatible
|
|
property and this commit did not go into stable.
|
|
|
|
So either commit 8ee4a5f4f40d has also to go into stable before this, or
|
|
this patch has to be fixed a little in order to apply to 4.14+.
|
|
|
|
Please let me know how should I handle this.
|
|
|
|
---
|
|
arch/arm/boot/dts/armada-385-turris-omnia.dts | 1 +
|
|
1 file changed, 1 insertion(+)
|
|
|
|
--- a/arch/arm/boot/dts/armada-385-turris-omnia.dts
|
|
+++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts
|
|
@@ -254,6 +254,7 @@
|
|
status = "okay";
|
|
compatible = "ethernet-phy-id0141.0DD1", "ethernet-phy-ieee802.3-c22";
|
|
reg = <1>;
|
|
+ marvell,reg-init = <3 18 0 0x4985>;
|
|
|
|
/* irq is connected to &pcawan pin 7 */
|
|
};
|