| Message ID | 1618493261-32606-7-git-send-email-peng.fan@oss.nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | remoteproc: imx_rproc: support i.MX7ULP/8MN/8MP | expand |
On Thu, Apr 15, 2021 at 09:27:39PM +0800, peng.fan@oss.nxp.com wrote: > From: Peng Fan <peng.fan@nxp.com> > > To i.MX7ULP, M4 is the master to control everything, no need to provide > clk from Linux side. So make clk optional when method is IMX_RPROC_NONE. > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > --- > drivers/remoteproc/imx_rproc.c | 46 ++++++++++++++++++++++++++++-------------- > 1 file changed, 31 insertions(+), 15 deletions(-) > > diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c > index 2b633fd..56dfcc1 100644 > --- a/drivers/remoteproc/imx_rproc.c > +++ b/drivers/remoteproc/imx_rproc.c > @@ -606,6 +606,35 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) > return 0; > } > > +static int imx_rproc_clk_enable(struct imx_rproc *priv) > +{ > + const struct imx_rproc_dcfg *dcfg = priv->dcfg; > + struct device *dev = priv->dev; > + int ret; > + > + /* Remote core is not under control of Linux */ > + if (dcfg->method == IMX_RPROC_NONE) > + return 0; > + > + priv->clk = devm_clk_get(dev, NULL); > + if (IS_ERR(priv->clk)) { > + dev_err(dev, "Failed to get clock\n"); > + return PTR_ERR(priv->clk); > + } > + > + /* > + * clk for M4 block including memory. Should be > + * enabled before .start for FW transfer. > + */ > + ret = clk_prepare_enable(priv->clk); > + if (ret) { > + dev_err(dev, "Failed to enable clock\n"); > + return ret; > + } > + > + return 0; > +} > + > static int imx_rproc_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > @@ -654,22 +683,9 @@ static int imx_rproc_probe(struct platform_device *pdev) > if (ret) > goto err_put_mbox; > > - priv->clk = devm_clk_get(dev, NULL); > - if (IS_ERR(priv->clk)) { > - dev_err(dev, "Failed to get clock\n"); > - ret = PTR_ERR(priv->clk); > - goto err_put_mbox; > - } > - > - /* > - * clk for M4 block including memory. Should be > - * enabled before .start for FW transfer. > - */ > - ret = clk_prepare_enable(priv->clk); > - if (ret) { > - dev_err(&rproc->dev, "Failed to enable clock\n"); > + ret = imx_rproc_clk_enable(priv); > + if (ret) Much better Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> > goto err_put_mbox; > - } > > INIT_WORK(&priv->rproc_work, imx_rproc_vq_work); > > -- > 2.7.4 >
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 2b633fd..56dfcc1 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -606,6 +606,35 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) return 0; } +static int imx_rproc_clk_enable(struct imx_rproc *priv) +{ + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + struct device *dev = priv->dev; + int ret; + + /* Remote core is not under control of Linux */ + if (dcfg->method == IMX_RPROC_NONE) + return 0; + + priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk)) { + dev_err(dev, "Failed to get clock\n"); + return PTR_ERR(priv->clk); + } + + /* + * clk for M4 block including memory. Should be + * enabled before .start for FW transfer. + */ + ret = clk_prepare_enable(priv->clk); + if (ret) { + dev_err(dev, "Failed to enable clock\n"); + return ret; + } + + return 0; +} + static int imx_rproc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -654,22 +683,9 @@ static int imx_rproc_probe(struct platform_device *pdev) if (ret) goto err_put_mbox; - priv->clk = devm_clk_get(dev, NULL); - if (IS_ERR(priv->clk)) { - dev_err(dev, "Failed to get clock\n"); - ret = PTR_ERR(priv->clk); - goto err_put_mbox; - } - - /* - * clk for M4 block including memory. Should be - * enabled before .start for FW transfer. - */ - ret = clk_prepare_enable(priv->clk); - if (ret) { - dev_err(&rproc->dev, "Failed to enable clock\n"); + ret = imx_rproc_clk_enable(priv); + if (ret) goto err_put_mbox; - } INIT_WORK(&priv->rproc_work, imx_rproc_vq_work);