mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-31 05:54:26 -04:00
aba4e29ead
Register serial consoles through device tree instead of through board data. Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
From 317f8659bba01b307cbe4e9902d4e3d333fd7164 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jonas.gorski@gmail.com>
|
|
Date: Sun, 16 Jul 2017 12:39:17 +0200
|
|
Subject: [PATCH V2 4/8] tty/bcm63xx_uart: allow naming clock in device tree
|
|
|
|
Codify using a named clock for the refclk of the uart. This makes it
|
|
easier if we might need to add a gating clock (like present on the
|
|
BCM6345).
|
|
|
|
Acked-by: Rob Herring <robh@kernel.org>
|
|
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
|
|
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
|
|
---
|
|
Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt | 6 ++++++
|
|
drivers/tty/serial/bcm63xx_uart.c | 6 ++++--
|
|
2 files changed, 10 insertions(+), 2 deletions(-)
|
|
|
|
--- a/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt
|
|
+++ b/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt
|
|
@@ -11,6 +11,11 @@ Required properties:
|
|
- clocks: Clock driving the hardware; used to figure out the baud rate
|
|
divisor.
|
|
|
|
+
|
|
+Optional properties:
|
|
+
|
|
+- clock-names: Should be "refclk".
|
|
+
|
|
Example:
|
|
|
|
uart0: serial@14e00520 {
|
|
@@ -19,6 +24,7 @@ Example:
|
|
interrupt-parent = <&periph_intc>;
|
|
interrupts = <2>;
|
|
clocks = <&periph_clk>;
|
|
+ clock-names = "refclk";
|
|
};
|
|
|
|
clocks {
|
|
--- a/drivers/tty/serial/bcm63xx_uart.c
|
|
+++ b/drivers/tty/serial/bcm63xx_uart.c
|
|
@@ -841,8 +841,10 @@ static int bcm_uart_probe(struct platfor
|
|
if (!res_irq)
|
|
return -ENODEV;
|
|
|
|
- clk = pdev->dev.of_node ? of_clk_get(pdev->dev.of_node, 0) :
|
|
- clk_get(&pdev->dev, "refclk");
|
|
+ clk = clk_get(&pdev->dev, "refclk");
|
|
+ if (IS_ERR(clk) && pdev->dev.of_node)
|
|
+ clk = of_clk_get(pdev->dev.of_node, 0);
|
|
+
|
|
if (IS_ERR(clk))
|
|
return -ENODEV;
|
|
|