Hi Heiko,
On 2016年03月28日 08:07, Heiko Stuebner wrote:
Hi Xing,
Am Montag, 28. März 2016, 01:52:12 schrieb Heiko Stübner:
Am Samstag, 26. März 2016, 14:37:54 schrieb Xing Zheng:
Add devicetree bindings for Rockchip cru which found on
Rockchip SoCs.
Signed-off-by: Xing Zheng<zhengxing@xxxxxxxxxxxxxx>
Signed-off-by: Jianqun Xu<jay.xu@xxxxxxxxxxxxxx>
Acked-by: Rob Herring<robh@xxxxxxxxxx>
---
Changes in v5: None
Changes in v3: None
Changes in v2: None
.../bindings/clock/rockchip,rk3399-cru.txt | 83
++++++++++++++++++++ 1 file changed, 83 insertions(+)
create mode 100644
Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt
diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3399-
cru.txt
b/Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt new
file mode 100644
index 0000000..9427caa
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt
@@ -0,0 +1,83 @@
+* Rockchip RK3399 Clock and Reset Unit
+
+The RK3399 clock controller generates and supplies clock to various
+controllers within the SoC and also implements a reset controller for
SoC +peripherals.
+
+Required Properties:
+
+- compatible: PMU for CRU should be "rockchip,rk3399-pmucru"
+- compatible: CRU should be "rockchip,rk3399-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. +
the rk3399 doesn't need the GRF, so we should drop this block for now
actually, I just saw that the GRF is needed for the static settings during
init. So the rockchip,grf should stay but also move up to required
properties?
Same for the grf-comment in the examples-section.
I check the setting of the pclk_alive and pclk_pmu_src are not gating
default on the PMUGRF_SOC_CON0,
so I think that we don't need to do the static settings to re-enable
them in the clock driver any more.
Thanks.
--
- Xing Zheng
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