From: Tony Lindgren <tony@atomide.com>
To: Faiz Abbas <faiz_abbas@ti.com>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-clk@vger.kernel.org, robh+dt@kernel.org,
bcousson@baylibre.com, paul@pwsan.com, t-kristo@ti.com,
mark.rutland@arm.com
Subject: Re: [PATCH v4 4/6] bus: ti-sysc: Add support for software reset
Date: Thu, 5 Jul 2018 08:47:58 -0700 [thread overview]
Message-ID: <20180705154758.GA112168@atomide.com> (raw)
In-Reply-To: <20180705142319.19583-5-faiz_abbas@ti.com>
* Faiz Abbas <faiz_abbas@ti.com> [180705 14:24]:
> +static int sysc_reset(struct sysc *ddata)
> +{
> + int offset = ddata->offsets[SYSC_SYSCONFIG];
> + int val = sysc_read(ddata, offset);
Can you please just warn and return early for now if no
syss_mask is specified? Otherwise we'll have mysterious
errors if somebody leaves out "ti,hwmods" for module types
we do not yet support reset for.
> + val |= (0x1 << ddata->cap->regbits->srst_shift);
> + sysc_write(ddata, offset, val);
> +
> + /* Poll on reset status */
> + if (ddata->cfg.syss_mask) {
> + offset = ddata->offsets[SYSC_SYSSTATUS];
> +
> + return readl_poll_timeout(ddata->module_va + offset, val,
> + (val & ddata->cfg.syss_mask) == 0x0,
> + 100, MAX_MODULE_SOFTRESET_WAIT);
> + }
> +
> + return 0;
> +}
> +
Otherwise looks good to me.
Thanks,
Tony
next prev parent reply other threads:[~2018-07-05 15:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-05 14:23 [PATCH v4 0/6] Add MCAN Support for dra76x Faiz Abbas
2018-07-05 14:23 ` [PATCH v4 1/6] ARM: dts: dra762: Add MCAN clock support Faiz Abbas
2018-07-05 14:23 ` [PATCH v4 2/6] clk: ti: dra7: Add clkctrl clock data for the mcan clocks Faiz Abbas
2018-07-06 20:47 ` Stephen Boyd
2018-07-05 14:23 ` [PATCH v4 3/6] bus: ti-sysc: Add support for using ti-sysc for MCAN on dra76x Faiz Abbas
2018-07-05 14:23 ` [PATCH v4 4/6] bus: ti-sysc: Add support for software reset Faiz Abbas
2018-07-05 15:47 ` Tony Lindgren [this message]
2018-07-06 10:04 ` Faiz Abbas
2018-07-06 10:35 ` Tony Lindgren
2018-07-06 12:35 ` Faiz Abbas
2018-07-05 14:23 ` [PATCH v4 5/6] ARM: dts: Add generic interconnect target module node for MCAN Faiz Abbas
2018-07-05 14:23 ` [PATCH v4 6/6] ARM: dts: dra76x: Add MCAN node Faiz Abbas
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