bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 0 insertions, 61 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0397-tty-amba-pl011-Add-un-throttle-support.patch b/target/linux/bcm27xx/patches-5.4/950-0397-tty-amba-pl011-Add-un-throttle-support.patch
deleted file mode 100644
index ced0bf2b79..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0397-tty-amba-pl011-Add-un-throttle-support.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From a3749ee48539fa832b1832cdcae26d34e5d20f00 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Fri, 24 Jan 2020 11:38:28 +0000
-Subject: [PATCH] tty: amba-pl011: Add un/throttle support
-
-The PL011 driver lacks throttle and unthrottle methods. As a result,
-sending more data to the Pi than it can immediately sink while CRTSCTS
-is enabled causes a NULL pointer to be followed.
-
-Add a throttle handler that disables the RX interrupts, and an
-unthrottle handler that reenables them.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- drivers/tty/serial/amba-pl011.c | 28 ++++++++++++++++++++++++++++
- 1 file changed, 28 insertions(+)
-
---- a/drivers/tty/serial/amba-pl011.c
-+++ b/drivers/tty/serial/amba-pl011.c
-@@ -1326,6 +1326,32 @@ static void pl011_start_tx(struct uart_p
- 		pl011_start_tx_pio(uap);
- }
- 
-+static void pl011_throttle(struct uart_port *port)
-+{
-+	struct uart_amba_port *uap =
-+	    container_of(port, struct uart_amba_port, port);
-+	unsigned long flags;
-+
-+	spin_lock_irqsave(&uap->port.lock, flags);
-+	uap->im &= ~(UART011_RTIM | UART011_RXIM);
-+	pl011_write(uap->im, uap, REG_IMSC);
-+	spin_unlock_irqrestore(&uap->port.lock, flags);
-+}
-+
-+static void pl011_unthrottle(struct uart_port *port)
-+{
-+	struct uart_amba_port *uap =
-+	    container_of(port, struct uart_amba_port, port);
-+	unsigned long flags;
-+
-+	spin_lock_irqsave(&uap->port.lock, flags);
-+	uap->im |= UART011_RTIM;
-+	if (!pl011_dma_rx_running(uap))
-+	    uap->im |= UART011_RXIM;
-+	pl011_write(uap->im, uap, REG_IMSC);
-+	spin_unlock_irqrestore(&uap->port.lock, flags);
-+}
-+
- static void pl011_stop_rx(struct uart_port *port)
- {
- 	struct uart_amba_port *uap =
-@@ -2167,6 +2193,8 @@ static const struct uart_ops amba_pl011_
- 	.stop_tx	= pl011_stop_tx,
- 	.start_tx	= pl011_start_tx,
- 	.stop_rx	= pl011_stop_rx,
-+	.throttle	= pl011_throttle,
-+	.unthrottle	= pl011_unthrottle,
- 	.enable_ms	= pl011_enable_ms,
- 	.break_ctl	= pl011_break_ctl,
- 	.startup	= pl011_startup,