Quoting Geert Uytterhoeven (2015-05-28 11:53:38) > Currently the CPG Clock Domain code looks for MSTP clocks to power > manage a device. > > Unfortunately, on R-Mobile APE6 (r8a73a4) and SH-Mobile AG5 (sh73a0), > the Bus State Controller (BSC) is not power-managed by an MSTP clock, > but by a plain CPG clock (zb_clk). Add a special case to handle this, > so the clock is properly managed, and devices connected to the BSC work > as expected. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > --- > v2: > - New. > --- > drivers/clk/shmobile/clk-mstp.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c > index 619f3eccefd4884f..19e2b11953383587 100644 > --- a/drivers/clk/shmobile/clk-mstp.c > +++ b/drivers/clk/shmobile/clk-mstp.c > @@ -258,6 +258,10 @@ int cpg_mstp_attach_dev(struct generic_pm_domain *domain, struct device *dev) > "renesas,cpg-mstp-clocks")) > goto found; > > + /* BSC on r8a73a4/sh73a0 uses zb_clk instead of an mstp clock*/ > + if (!strcmp(clkspec.np->name, "zb_clk")) > + goto found; Hello Geert, Is the driver the right place to handle this corner case? What do you think about linking zb_clk up to the bsc devicetree node for r8a73a4/sh73a0? Regards, Mike > + > of_node_put(clkspec.np); > i++; > } > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" in
