diff options
Diffstat (limited to 'target/linux/bcm63xx/patches-4.14/001-4.15-04-tty-bcm63xx_uart-allow-naming-clock-in-device-tree.patch')
| -rw-r--r-- | target/linux/bcm63xx/patches-4.14/001-4.15-04-tty-bcm63xx_uart-allow-naming-clock-in-device-tree.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/bcm63xx/patches-4.14/001-4.15-04-tty-bcm63xx_uart-allow-naming-clock-in-device-tree.patch b/target/linux/bcm63xx/patches-4.14/001-4.15-04-tty-bcm63xx_uart-allow-naming-clock-in-device-tree.patch new file mode 100644 index 0000000000..2f82830ae1 --- /dev/null +++ b/target/linux/bcm63xx/patches-4.14/001-4.15-04-tty-bcm63xx_uart-allow-naming-clock-in-device-tree.patch @@ -0,0 +1,55 @@ +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 +@@ -846,8 +846,10 @@ 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; + |