Allwinner A64: Issue on external rtc clock to wifi chip

Jagan Teki
2018-05-14T08:04:56Z

On Mon, May 14, 2018 at 1:27 PM, Maxime Ripard
<maxime.ripard@bootlin.com> wrote:
> Hi,
>
> On Mon, May 14, 2018 at 12:37:49PM +0530, Jagan Teki wrote:
>> Hi Maxime and All,
>>
>> We are trying to bring-up AP6330 Wifi chip for A64 board. We noticed
>> to have an external rtc clock has driven from wifi chip.
>>
>> So the devicetree is configured according to this as below.
>>
>> / {
>> wifi_pwrseq: wifi-pwrseq {
>> compatible = "mmc-pwrseq-simple";
>> clocks = <&rtc 1>;
>> clock-names = "ext_clock";
>> reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
>> post-power-on-delay-ms = <400>;
>> };
>> };
>>
>> &rtc {
>> clock-output-names = "rtc-osc32k", "rtc-osc32k-out";
>> clocks = <&osc32k>;
>> #clock-cells = <1>;
>> };
>>
>> &mmc1 {
>> pinctrl-names = "default";
>> pinctrl-0 = <&mmc1_pins>;
>> vmmc-supply = <&reg_dcdc1>;
>> vqmmc-supply = <&reg_eldo1>;
>> mmc-pwrseq = <&wifi_pwrseq>;
>> bus-width = <4>;
>> non-removable;
>> status = "okay";
>>
>> brcmf: wifi at 1 {
>> reg = <1>;
>> compatible = "brcm,bcm4329-fmac";
>> interrupt-parent = <&r_pio>;
>> interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>; /* WL-WAKE-AP: PL3 */
>> interrupt-names = "host-wake";
>> };
>> };
>>
>> And observed rtc-osc32k-out clock is never enabled[1] and the value of
>> LOSC_OUT_GATING is 0x0 which eventually not enabling
>> LOSC_OUT_GATING_EN
>>
>> Pls. let us know if we miss anything here?
>>
>> [1] https://paste.ubuntu.com/p/X2By4q8kD2/
>
> Could you paste your config and the logs from a boot to?

.config
https://paste.ubuntu.com/p/w9w2KB7RFc/

dmesg