Hi Stephen,

Thanks for the fully review, we really appreciate your time.

Please see my comments below. 

On 2018/10/20 2:04, Stephen Boyd wrote:

Quoting Jianxin Pan (2018-10-19 08:50:08)

quoted

On 2018/10/19 1:08, Stephen Boyd wrote:

quoted

Quoting Jianxin Pan (2018-10-17 22:07:24)

quoted

diff --git a/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt
new file mode 100644
index 0000000..9e6d343
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/amlogic,mmc-clkc.txt

@@ -0,0 +1,31 @@
+* Amlogic MMC Sub Clock Controller Driver
+
+The Amlogic MMC clock controller generates and supplies clock to support
+MMC and NAND controller
+
+Required Properties:
+
+- compatible: should be:
+               "amlogic,gx-mmc-clkc"
+               "amlogic,axg-mmc-clkc"
+
+- #clock-cells: should be 1.
+- clocks: phandles to clocks corresponding to the clock-names property
+- clock-names: list of parent clock names
+       - "clkin0", "clkin1"
+
+Parent node should have the following properties :

The example only has one node. Can you add two nodes?

OK. This clock is used by nand and emmc. I will add a new example for emmc too.
Thank you for your review.

Maybe I misunderstand. I thought the clk controller was two nodes, but
it isn't? This wording is trying to explain what a consumer should look
like?

Yes.There is another clk controller.  I will add it in the next version.
sd_emmc_b_clkc: clock-controller at 5000 {                  
         compatible = "amlogic,axg-mmc-clkc", "syscon";   
         reg = <0x0 0x5000 0x0 0x4>;                      
         #clock-cells = <1>;                              
                                                          
         clock-names = "clkin0", "clkin1";                
         clocks = <&clkc CLKID_SD_EMMC_B_CLK0>,           
                 <&clkc CLKID_FCLK_DIV2>;                 
};
sd_emmc_c_clkc is for nadn and mmc portC.
sd_emmc_b_clkc is for mmc portB.

.