Thanks Bjorn for the review comments,
On 21/03/18 11:35, Bjorn Andersson wrote:
On Tue 20 Mar 17:28 HKT 2018, Srinivas Kandagatla wrote:
From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
This patch adds support to external pcie refclk.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
arch/arm/boot/dts/qcom-apq8064-db600c.dts | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm/boot/dts/qcom-apq8064-db600c.dts b/arch/arm/boot/dts/qcom-apq8064-db600c.dts
index 50151ef6e912..7587088c122f 100644
--- a/arch/arm/boot/dts/qcom-apq8064-db600c.dts
+++ b/arch/arm/boot/dts/qcom-apq8064-db600c.dts
@@ -45,6 +45,18 @@
};
+ clocks {
+ compatible = "simple-bus";
+ pcie_refclk: pcie-refclk {
As the si53154 is used to acquire 3 different clocks (2 pcie and 1 sata)
it would be nice to accurately represent this in the DT. That said,
exposing this as a clock allow us to change the representation here
later. (Both pcie_core_clk and pcie_eth_clk use the same gpio pin as
enable pin, so I don't know how to represent this...)
This is a refclk, which should be always same for both PCIe Controllers
and connected PCIe endpoints.
For sata we should have one more refclk entry of its own.
So for now, please name this "pcie_core_clk", per the schematics.
This is pcie refclk, if you follow the line in the schematics should see
that it terminates to pcie refclk.
+ pinctrl-0 = <&pcie_pins>;
+ pinctrl-names = "default";
+ compatible = "gpio-gate-clock";
+ clocks = <&rpmcc 27>;
+ #clock-cells = <0>;
+ enable-gpios = <&pm8921_gpio 22 GPIO_ACTIVE_HIGH>;
+ };
+ };
+
hdmi-out {
compatible = "hdmi-connector";
type = "a";
@@ -140,6 +152,16 @@
qcom,ssbi@500000 {
pmic@0 {
+ gpio@150 {
+ pcie_pins: pcie_pins {
Please label this "pcie_clk_en_pin" and don't use '_' in the name of the
node.
I agree, Will fix it.
+ pios {
You can omit this level and just put the properties in directly in the
pcie-clk-en node.
Okay.
thanks,
srini
+ pins = "gpio22";
+ function = "normal";
+ power-source = <PM8921_GPIO_VPH>;
+ };
+ };
+ };
+
Regards,
Bjorn
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