Hi,
On Tue, Oct 13, 2015 at 05:37:57PM +0800, Chaotian Jing wrote:
> @@ -1260,6 +1547,16 @@ static int msdc_drv_probe(struct platform_device *pdev)
> goto host_free;
> }
>
> + host->src_clk_parent = clk_get_parent(host->src_clk);
> + host->hs400_src = devm_clk_get(&pdev->dev, "400mhz");
> + if (IS_ERR(host->hs400_src)) {
> + dev_dbg(&pdev->dev, "Cannot find 400mhz at dts!\n");
> + } else if (clk_set_parent(host->src_clk_parent, host->hs400_src) < 0) {
> + dev_err(host->dev, "Failed to set 400mhz source clock!\n");
> + ret = -EINVAL;
> + goto host_free;
> + }
This is a static setup. We have device tree bindings for doing this.
Please look for assigned-clocks and assigned-clock-parents. Doing stuff
like this in the driver almost certainly leads to problems because the
next SoC will have different requirements here.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
