Thread (12 messages) 12 messages, 3 authors, 2018-07-06

[PATCH v4 4/6] bus: ti-sysc: Add support for software reset

From: tony@atomide.com (Tony Lindgren)
Date: 2018-07-05 15:48:06
Also in: linux-clk, linux-devicetree, linux-omap, lkml

* Faiz Abbas [off-list ref] [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
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