mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
1343acc8cd
Deleted (upstreamed): bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch [1] bcm27xx/patches-5.10/950-0672-drm-vc4-hdmi-Move-initial-register-read-after-pm_run.patch [1] gemini/patches-5.10/0003-ARM-dts-gemini-NAS4220-B-fis-index-block-with-128-Ki.patch [2] Manually rebased: bcm27xx/patches-5.10/950-0675-drm-vc4-hdmi-Drop-devm-interrupt-handler-for-CEC-int.patch Manually reverted: generic/pending-5.10/860-Revert-ASoC-mediatek-Check-for-error-clk-pointer.patch [3] [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.94&id=55b10b88ac8654fc2f31518aa349a2e643b37f18 [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.94&id=958a8819d41420d7a74ed922a09cacc0ba3a4218 [3] https://lore.kernel.org/all/trinity-2a727d96-0335-4d03-8f30-e22a0e10112d-1643363480085@3c-app-gmx-bap33/ Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From 8ccf96729972504acf4ca0e1868278ba549e0f5a Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Fri, 29 Sep 2017 10:32:19 +0100
|
|
Subject: [PATCH] amba_pl011: Add cts-event-workaround DT property
|
|
|
|
The BCM2835 PL011 implementation seems to have a bug that can lead to a
|
|
transmission lockup if CTS changes frequently. A workaround was added to
|
|
the driver with a vendor-specific flag to enable it, but this flag is
|
|
currently not set for ARM implementations.
|
|
|
|
Add a "cts-event-workaround" property to Pi DTBs and use the presence
|
|
of that property to force the flag to be enabled in the driver.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/1280
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
Documentation/devicetree/bindings/serial/pl011.yaml | 6 ++++++
|
|
drivers/tty/serial/amba-pl011.c | 5 +++++
|
|
2 files changed, 11 insertions(+)
|
|
|
|
--- a/Documentation/devicetree/bindings/serial/pl011.yaml
|
|
+++ b/Documentation/devicetree/bindings/serial/pl011.yaml
|
|
@@ -98,6 +98,12 @@ properties:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
default: 3000
|
|
|
|
+ cts-event-workaround:
|
|
+ description:
|
|
+ Enables the (otherwise vendor-specific) workaround for the
|
|
+ CTS-induced TX lockup.
|
|
+ type: boolean
|
|
+
|
|
required:
|
|
- compatible
|
|
- reg
|
|
--- a/drivers/tty/serial/amba-pl011.c
|
|
+++ b/drivers/tty/serial/amba-pl011.c
|
|
@@ -2665,6 +2665,11 @@ static int pl011_probe(struct amba_devic
|
|
if (IS_ERR(uap->clk))
|
|
return PTR_ERR(uap->clk);
|
|
|
|
+ if (of_property_read_bool(dev->dev.of_node, "cts-event-workaround")) {
|
|
+ vendor->cts_event_workaround = true;
|
|
+ dev_info(&dev->dev, "cts_event_workaround enabled\n");
|
|
+ }
|
|
+
|
|
uap->reg_offset = vendor->reg_offset;
|
|
uap->vendor = vendor;
|
|
uap->fifosize = vendor->get_fifosize(dev);
|