[PATCH] clk: rockchip: disable unused clocks

[Doug Anderson]

Kever,

On Wed, Oct 29, 2014 at 6:10 PM, Kever Yang <kever.yang at rock-chips.com> wrote:
>>> I'll also say that when I applied this atop my local tree that USB
>>> stopped working.  I just see:
>>>
>>> [ 1647.626747] hub 2-1:1.0: hub_port_status failed (err = -110)
>>> [ 1657.626746] hub 2-1:1.0: hub_port_status failed (err = -110)
>>>
>>> ...over and over and over again.
>>
>> maybe Kever's dwc2 clock-handling patch [0] might help there, as the
>> dwc2-host
>> currently does not seem to do any clock handling at all.
>
> I think Heiko is right, I test in my evb with following change and dwc2
> works well:
> --- a/drivers/clk/rockchip/clk-rk3288.c
> +++ b/drivers/clk/rockchip/clk-rk3288.c
> @@ -654,8 +654,8 @@ static struct rockchip_clk_branch rk3288_clk_branches[]
> __initdata = {
>
>         /* hclk_peri gates */
>         GATE(0, "hclk_peri_matrix", "hclk_peri", CLK_IGNORE_UNUSED,
> RK3288_CLKGATE_CON(6), 0, GFLAGS),
> -       GATE(HCLK_OTG0, "hclk_otg0", "hclk_peri", 0, RK3288_CLKGATE_CON(7),
> 4, GFLAGS),
> -       GATE(HCLK_USBHOST0, "hclk_host0", "hclk_peri", 0,
> RK3288_CLKGATE_CON(7), 6, GFLAGS),
> +       GATE(HCLK_OTG0, "hclk_otg0", "hclk_peri", CLK_IGNORE_UNUSED,
> RK3288_CLKGATE_CON(7), 4, GFLAGS),
> +       GATE(HCLK_USBHOST0, "hclk_host0", "hclk_peri", CLK_IGNORE_UNUSED,
> RK3288_CLKGATE_CON(7), 6, GFLAGS),
>         GATE(HCLK_USBHOST1, "hclk_host1", "hclk_peri", 0,
> RK3288_CLKGATE_CON(7), 7, GFLAGS),
>         GATE(HCLK_HSIC, "hclk_hsic", "hclk_peri", 0, RK3288_CLKGATE_CON(7),
> 8, GFLAGS),
>         GATE(0, "hclk_usb_peri", "hclk_peri", CLK_IGNORE_UNUSED,
> RK3288_CLKGATE_CON(7), 9, GFLAGS),

Yeah, that fixes it for me.  Since the USB patches are still RFC-level
I assume you'll add these to your next version.