bcm27xx: remove linux 5.10 compatibility

[openwrt/staging/chunkeey.git] / target / linux / bcm27xx / patches-5.10 / 950-0034-amba_pl011-Add-cts-event-workaround-DT-property.patch

diff --git a/target/linux/bcm27xx/patches-5.10/950-0034-amba_pl011-Add-cts-event-workaround-DT-property.patch b/target/linux/bcm27xx/patches-5.10/950-0034-amba_pl011-Add-cts-event-workaround-DT-property.patch
deleted file mode 100644 (file)
index 07b9784..0000000
--- a/target/linux/bcm27xx/patches-5.10/950-0034-amba_pl011-Add-cts-event-workaround-DT-property.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-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);