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Groups > linux.kernel > #1521581
| From | Andy Yan <andy.yan@rock-chips.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 02/10] dt-bindings: add documentation for rk1108 cru |
| Date | 2016-11-14 13:10 +0100 |
| Message-ID | <sDoff-6Oy-5@gated-at.bofh.it> (permalink) |
| References | <sDo5A-6un-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Shawn Lin <shawn.lin@rock-chips.com>
This adds the dt-binding documentation for the clock and reset unit
found on Rockchip rk1108 SoCs.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
---
Changes in v2: None
.../bindings/clock/rockchip,rk1108-cru.txt | 60 ++++++++++++++++++++++
1 file changed, 60 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk1108-cru.txt
diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk1108-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,rk1108-cru.txt
new file mode 100644
index 0000000..4d2356b
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/rockchip,rk1108-cru.txt
@@ -0,0 +1,60 @@
+* Rockchip RK1108 Clock and Reset Unit
+
+The RK1108 clock controller generates and supplies clock to various
+controllers within the SoC and also implements a reset controller for SoC
+peripherals.
+
+Required Properties:
+
+- compatible: should be "rockchip,rk1108-cru"
+- reg: physical base address of the controller and length of memory mapped
+ region.
+- #clock-cells: should be 1.
+- #reset-cells: should be 1.
+
+Optional Properties:
+
+- rockchip,grf: phandle to the syscon managing the "general register files"
+ If missing pll rates are not changeable, due to the missing pll lock status.
+
+Each clock is assigned an identifier and client nodes can use this identifier
+to specify the clock which they consume. All available clocks are defined as
+preprocessor macros in the dt-bindings/clock/rk1108-cru.h headers and can be
+used in device tree sources. Similar macros exist for the reset sources in
+these files.
+
+External clocks:
+
+There are several clocks that are generated outside the SoC. It is expected
+that they are defined using standard clock bindings with following
+clock-output-names:
+ - "xin24m" - crystal input - required,
+ - "cif_clkout" - output clock for the cif - optional
+ - "mipi_csi_clkout" - output clock for the mipi csi - optional
+ - "pclkin_vip" - external VIP clock - optional
+ - "ext_i2s" - external I2S clock - optional
+ - "ext_gmac" - external GMAC clock - optional
+ - "mac_ref_clkout" - output clock of the pll in the mac phy
+
+Example: Clock controller node:
+
+ cru: cru@20200000 {
+ compatible = "rockchip,rk1108-cru";
+ reg = <0x20200000 0x1000>;
+ rockchip,grf = <&grf>;
+
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
+
+Example: UART controller node that consumes the clock generated by the clock
+ controller:
+
+ uart0: serial@10230000 {
+ compatible = "rockchip,rk1108-uart", "snps,dw-apb-uart";
+ reg = <0x10230000 0x100>;
+ interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&cru SCLK_UART0>;
+ };
--
2.7.4
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[PATCH v2 00/10] Add basic support for Rockchip RK1108 SOC Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:00 +0100
[PATCH v2 03/10] clk: rockchip: add dt-binding header for rk1108 Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:10 +0100
Re: [PATCH v2 03/10] clk: rockchip: add dt-binding header for rk1108 Heiko Stuebner <heiko@sntech.de> - 2016-11-15 10:50 +0100
Re: [PATCH v2 03/10] clk: rockchip: add dt-binding header for rk1108 Shawn Lin <shawn.lin@rock-chips.com> - 2016-11-16 01:50 +0100
[PATCH v2 02/10] dt-bindings: add documentation for rk1108 cru Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:10 +0100
Re: [PATCH v2 02/10] dt-bindings: add documentation for rk1108 cru Heiko Stuebner <heiko@sntech.de> - 2016-11-15 10:40 +0100
Re: [PATCH v2 02/10] dt-bindings: add documentation for rk1108 cru Shawn Lin <shawn.lin@rock-chips.com> - 2016-11-16 01:50 +0100
[PATCH v2 01/10] dt-bindings: rockchip-dw-mshc: add RK1108 dw-mshc description Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:10 +0100
Re: [PATCH v2 01/10] dt-bindings: rockchip-dw-mshc: add RK1108 dw-mshc description Heiko Stuebner <heiko@sntech.de> - 2016-11-15 00:20 +0100
[PATCH v2 04/10] clk: rockchip: add clock controller for rk1108 Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:10 +0100
Re: [PATCH v2 04/10] clk: rockchip: add clock controller for rk1108 Heiko Stuebner <heiko@sntech.de> - 2016-11-15 11:40 +0100
[PATCH v2 09/10] ARM: rockchip: enable support for RK1108 SoC Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:20 +0100
Re: [PATCH v2 09/10] ARM: rockchip: enable support for RK1108 SoC Heiko Stuebner <heiko@sntech.de> - 2016-11-15 12:40 +0100
[PATCH v2 07/10] ARM: add low level debug uart for rk1108 Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:20 +0100
Re: [PATCH v2 07/10] ARM: add low level debug uart for rk1108 Heiko Stuebner <heiko@sntech.de> - 2016-11-15 12:40 +0100
[PATCH v2 06/10] pinctrl: rockchip: add support for rk1108 Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:20 +0100
Re: [PATCH v2 06/10] pinctrl: rockchip: add support for rk1108 Heiko Stuebner <heiko@sntech.de> - 2016-11-15 00:30 +0100
Re: [PATCH v2 06/10] pinctrl: rockchip: add support for rk1108 Linus Walleij <linus.walleij@linaro.org> - 2016-11-15 10:40 +0100
[PATCH v2 10/10] ARM: dts: rockchip: add rockchip RK1108 Evaluation board Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:20 +0100
Re: [PATCH v2 10/10] ARM: dts: rockchip: add rockchip RK1108 Evaluation board Heiko Stuebner <heiko@sntech.de> - 2016-11-16 13:00 +0100
[PATCH v2 08/10] ARM: dts: add basic support for Rockchip RK1108 SOC Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:20 +0100
Re: [PATCH v2 08/10] ARM: dts: add basic support for Rockchip RK1108 SOC Heiko Stuebner <heiko@sntech.de> - 2016-11-15 12:50 +0100
Re: [PATCH v2 08/10] ARM: dts: add basic support for Rockchip RK1108 SOC Heiko Stuebner <heiko@sntech.de> - 2016-11-16 13:00 +0100
[PATCH v2 05/10] dt-bindings: add documentation for rk1108 pinctrl Andy Yan <andy.yan@rock-chips.com> - 2016-11-14 13:20 +0100
Re: [PATCH v2 05/10] dt-bindings: add documentation for rk1108 pinctrl Heiko Stuebner <heiko@sntech.de> - 2016-11-15 00:20 +0100
Re: [PATCH v2 05/10] dt-bindings: add documentation for rk1108 pinctrl Linus Walleij <linus.walleij@linaro.org> - 2016-11-15 10:40 +0100
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