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* Allwinner A64: Issue on external rtc clock to wifi chip
@ 2018-05-14  7:07 ` Jagan Teki
  0 siblings, 0 replies; 27+ messages in thread
From: Jagan Teki @ 2018-05-14  7:07 UTC (permalink / raw)
  To: Maxime Ripard, Chen-Yu Tsai
  Cc: Michael Trimarchi, linux-sunxi, linux-kernel, linux-arm-kernel,
	devicetree

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@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/

Jagan.

-- 
Jagan Teki
Senior Linux Kernel Engineer | Amarula Solutions
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.

^ permalink raw reply	[flat|nested] 27+ messages in thread

end of thread, other threads:[~2018-05-28  7:08 UTC | newest]

Thread overview: 27+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-05-14  7:07 Allwinner A64: Issue on external rtc clock to wifi chip Jagan Teki
2018-05-14  7:07 ` Jagan Teki
2018-05-14  7:07 ` Jagan Teki
2018-05-14  7:57 ` Maxime Ripard
2018-05-14  7:57   ` Maxime Ripard
2018-05-14  7:57   ` Maxime Ripard
2018-05-14  8:04   ` Jagan Teki
2018-05-14  8:04     ` Jagan Teki
2018-05-14  8:04     ` Jagan Teki
2018-05-14  8:27     ` Maxime Ripard
2018-05-14  8:27       ` Maxime Ripard
2018-05-14  8:27       ` Maxime Ripard
2018-05-14  9:04       ` Jagan Teki
2018-05-14  9:04         ` Jagan Teki
2018-05-14  9:04         ` Jagan Teki
2018-05-14  9:06         ` Maxime Ripard
2018-05-14  9:06           ` Maxime Ripard
2018-05-14  9:06           ` Maxime Ripard
2018-05-14  9:42           ` Jagan Teki
2018-05-14  9:42             ` Jagan Teki
2018-05-14  9:42             ` Jagan Teki
2018-05-14 11:17             ` Maxime Ripard
2018-05-14 11:17               ` Maxime Ripard
2018-05-14 11:17               ` Maxime Ripard
2018-05-28  7:08               ` Michael Nazzareno Trimarchi
2018-05-28  7:08                 ` Michael Nazzareno Trimarchi
2018-05-28  7:08                 ` Michael Nazzareno Trimarchi

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