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SubjectRe: [PATCH] bus: ti-sysc: Fix missing reset delay handling
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On 12/12/19 12:29 am, Tony Lindgren wrote:
> We have dts property for "ti,sysc-delay-us", and we're using it, but the
> wait after OCP softreset only happens if devices are probed in legacy mode.
>
> Let's add a delay after writing the OCP softreset when specified.


Hi Tony,

Boot tested on DRA72 & DRA76.

Tested for RTC+DDR mode and DS0 mode on AM437x.
Tested for DS0 on am335x-evm & am335x-beagle-bone-black.

FWIW

Tested-by: Keerthy <j-keerthy@ti.com>

- Keerthy


>
> Fixes: e0db94fe87da ("bus: ti-sysc: Make OCP reset work for sysstatus and sysconfig reset bits")
> Cc: Keerthy <j-keerthy@ti.com>
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---
> drivers/bus/ti-sysc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
> --- a/drivers/bus/ti-sysc.c
> +++ b/drivers/bus/ti-sysc.c
> @@ -1590,6 +1590,10 @@ static int sysc_reset(struct sysc *ddata)
> sysc_val |= sysc_mask;
> sysc_write(ddata, sysc_offset, sysc_val);
>
> + if (ddata->cfg.srst_udelay)
> + usleep_range(ddata->cfg.srst_udelay,
> + ddata->cfg.srst_udelay * 2);
> +
> if (ddata->clk_enable_quirk)
> ddata->clk_enable_quirk(ddata);
>
>
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