| Message ID | 20170906070507.26223-7-dirk.behme@de.bosch.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Dirk, On Wed, Sep 6, 2017 at 9:05 AM, Dirk Behme <dirk.behme@de.bosch.com> wrote: > From: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> > > Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> > Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com> > --- > drivers/spi/spi-sh-msiof.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c > index a960e8da123d..2c53fc3f73af 100644 > --- a/drivers/spi/spi-sh-msiof.c > +++ b/drivers/spi/spi-sh-msiof.c > @@ -188,6 +188,14 @@ struct sh_msiof_spi_priv { > #define IER_RFOVFE 0x00000008 /* Receive FIFO Overflow Enable */ > > > +static int msiof_rcar_is_gen3(struct device *dev) > +{ > + struct device_node *node = dev->of_node; > + > + return of_device_is_compatible(node, "renesas,msiof-r8a7795") || > + of_device_is_compatible(node, "renesas,msiof-r8a7796"); Things like this should be done by adding a flag to struct sh_msiof_chipdata instead. > +} > + > static u32 sh_msiof_read(struct sh_msiof_spi_priv *p, int reg_offs) > { > switch (reg_offs) { > @@ -1252,6 +1260,8 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) > const struct of_device_id *of_id; > struct sh_msiof_spi_info *info; > struct sh_msiof_spi_priv *p; > + struct clk *ref_clk; > + u32 clk_rate = 0; > int i; > int ret; > > @@ -1352,6 +1362,17 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) > goto err2; > } > > + if (msiof_rcar_is_gen3(&master->dev)) { > + ref_clk = devm_clk_get(&pdev->dev, "msiof_ref_clk"); Where is this clock coming from? The MSIOF DT bindings specify a single clock only. > + if (!IS_ERR(ref_clk)) > + clk_rate = clk_get_rate(ref_clk); > + if (clk_rate) { > + clk_prepare_enable(p->clk); > + clk_set_rate(p->clk, clk_rate); > + clk_disable_unprepare(p->clk); > + } > + } > + Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index a960e8da123d..2c53fc3f73af 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -188,6 +188,14 @@ struct sh_msiof_spi_priv { #define IER_RFOVFE 0x00000008 /* Receive FIFO Overflow Enable */ +static int msiof_rcar_is_gen3(struct device *dev) +{ + struct device_node *node = dev->of_node; + + return of_device_is_compatible(node, "renesas,msiof-r8a7795") || + of_device_is_compatible(node, "renesas,msiof-r8a7796"); +} + static u32 sh_msiof_read(struct sh_msiof_spi_priv *p, int reg_offs) { switch (reg_offs) { @@ -1252,6 +1260,8 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) const struct of_device_id *of_id; struct sh_msiof_spi_info *info; struct sh_msiof_spi_priv *p; + struct clk *ref_clk; + u32 clk_rate = 0; int i; int ret; @@ -1352,6 +1362,17 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) goto err2; } + if (msiof_rcar_is_gen3(&master->dev)) { + ref_clk = devm_clk_get(&pdev->dev, "msiof_ref_clk"); + if (!IS_ERR(ref_clk)) + clk_rate = clk_get_rate(ref_clk); + if (clk_rate) { + clk_prepare_enable(p->clk); + clk_set_rate(p->clk, clk_rate); + clk_disable_unprepare(p->clk); + } + } + return 0; err2: