Thread (28 messages) 28 messages, 7 authors, 2019-06-24

Re: [PATCH 5/6] arm64: dts: Add ipq6018 SoC and CP01 board support

From: Sricharan R <hidden>
Date: 2019-06-10 10:10:05
Also in: linux-arm-msm, linux-clk, linux-devicetree, linux-gpio, lkml

Hi Christian,

On 6/6/2019 2:11 AM, Christian Lamparter wrote:
On Wed, Jun 5, 2019 at 7:16 PM Sricharan R [off-list ref] wrote:
quoted
Add initial device tree support for the Qualcomm IPQ6018 SoC and
CP01 evaluation board.

Signed-off-by: Sricharan R <redacted>
Signed-off-by: Abhishek Sahu <redacted>
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi

+       clocks {
+               sleep_clk: sleep_clk {
+                       compatible = "fixed-clock";
+                       clock-frequency = <32000>;
+                       #clock-cells = <0>;
+               };
+
Recently-ish, we ran into an issue with the clock-frequency of the sleep_clk
on older IPQ40XX (and IPQ806x) on the OpenWrt Github and ML.
From what I know, the external "32KHz" crystals have 32768 Hz, but the QSDK
declares them at 32000 Hz. Since you probably have access to the BOM and
datasheets. Can you please confirm what's the real clock frequency for
the IPQ6018.
(And maybe also for the sleep_clk of the IPQ4018 as well?).
What exactly is the issue that you faced ?
Looking in to the docs, it is <32000> only on ipq6018 and ipq40xx as well.

Regards,
 Sricharan

-- 
"QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

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