diff options
| author | Lanqing Liu <lanqing.liu@unisoc.com> | 2019-03-04 16:58:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-28 00:30:00 +0900 |
| commit | 984df54e4304d1ebe3e2320a9750b12236f14f0a (patch) | |
| tree | 9a79217cbd9045ae623fd42b047006ec6ea56f9c /Documentation | |
| parent | 9828def35a366fc1045cb794d99b6b12de89fa70 (diff) | |
dt-bindings: serial: sprd: Add clocks and clocks-names properties
This patch adds clocks and clocks-names properties, which are used to do
power management for our UART driver.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lanqing Liu <lanqing.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/serial/sprd-uart.txt | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/serial/sprd-uart.txt b/Documentation/devicetree/bindings/serial/sprd-uart.txt index cab40f0f6f49..6eb5863aa548 100644 --- a/Documentation/devicetree/bindings/serial/sprd-uart.txt +++ b/Documentation/devicetree/bindings/serial/sprd-uart.txt @@ -7,7 +7,13 @@ Required properties: - reg: offset and length of the register set for the device - interrupts: exactly one interrupt specifier -- clocks: phandles to input clocks. +- clock-names: Should contain following entries: + "enable" for UART module enable clock, + "uart" for UART clock, + "source" for UART source (parent) clock. +- clocks: Should contain a clock specifier for each entry in clock-names. + UART clock and source clock are optional properties, but enable clock + is required. Example: uart0: serial@0 { @@ -15,5 +21,6 @@ Example: "sprd,sc9836-uart"; reg = <0x0 0x100>; interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&ext_26m>; + clock-names = "enable", "uart", "source"; + clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>; }; |