| Message ID | 20200824221051.47972-4-eajames@linux.ibm.com |
|---|---|
| State | New |
| Headers | show |
| Series | AST2600 clock and FSI: Add APLL to control FSI clock | expand |
On Mon, 24 Aug 2020 at 22:11, Eddie James <eajames@linux.ibm.com> wrote: > > Set the FSI clock frequency based on the value encoded in the > devicetree, if present. Should we default it to 166 if it's not present? Reviewed-by: Joel Stanley <joel@jms.id.au> > > Signed-off-by: Eddie James <eajames@linux.ibm.com> > --- > drivers/fsi/fsi-master-aspeed.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c > index c006ec008a1a..aedcc9be48ca 100644 > --- a/drivers/fsi/fsi-master-aspeed.c > +++ b/drivers/fsi/fsi-master-aspeed.c > @@ -515,6 +515,7 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev) > struct fsi_master_aspeed *aspeed; > struct resource *res; > int rc, links, reg; > + u32 clk_freq; > __be32 raw; > > rc = tacoma_cabled_fsi_fixup(&pdev->dev); > @@ -539,6 +540,11 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev) > dev_err(aspeed->dev, "couldn't get clock\n"); > return PTR_ERR(aspeed->clk); > } > + > + if (!of_property_read_u32(pdev->dev.of_node, "clock-frequency", > + &clk_freq)) > + clk_set_rate(aspeed->clk, clk_freq); > + > rc = clk_prepare_enable(aspeed->clk); > if (rc) { > dev_err(aspeed->dev, "couldn't enable clock\n"); > -- > 2.26.2 >
diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c index c006ec008a1a..aedcc9be48ca 100644 --- a/drivers/fsi/fsi-master-aspeed.c +++ b/drivers/fsi/fsi-master-aspeed.c @@ -515,6 +515,7 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev) struct fsi_master_aspeed *aspeed; struct resource *res; int rc, links, reg; + u32 clk_freq; __be32 raw; rc = tacoma_cabled_fsi_fixup(&pdev->dev); @@ -539,6 +540,11 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev) dev_err(aspeed->dev, "couldn't get clock\n"); return PTR_ERR(aspeed->clk); } + + if (!of_property_read_u32(pdev->dev.of_node, "clock-frequency", + &clk_freq)) + clk_set_rate(aspeed->clk, clk_freq); + rc = clk_prepare_enable(aspeed->clk); if (rc) { dev_err(aspeed->dev, "couldn't enable clock\n");
Set the FSI clock frequency based on the value encoded in the devicetree, if present. Signed-off-by: Eddie James <eajames@linux.ibm.com> --- drivers/fsi/fsi-master-aspeed.c | 6 ++++++ 1 file changed, 6 insertions(+)