| Message ID | 20190118010634.27399-1-paul@crapouillou.net |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [1/8] MIPS: DTS: CI20: Set BCH clock to 200 MHz | expand |
Hi Paul, On Thu, 17 Jan 2019 22:06:27 -0300 Paul Cercueil <paul@crapouillou.net> wrote: > This is currently done inside the jz4780-bch driver, but it really > should be done here instead. > I disagree with that statement. If it's a per-SoC constraint then you can select the appropriate rate based on the compatible in the driver. If the clock rate depends on the NAND chip it probably means it's used to generate the RE/WE pulse and should depend on the NAND timings passed to ->setup_data_interface(). In either case, this should not be specified in the DT. Regards, Boris > Signed-off-by: Paul Cercueil <paul@crapouillou.net> > --- > arch/mips/boot/dts/ingenic/ci20.dts | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts > index 50cff3cbcc6d..aa892ec54d0a 100644 > --- a/arch/mips/boot/dts/ingenic/ci20.dts > +++ b/arch/mips/boot/dts/ingenic/ci20.dts > @@ -111,6 +111,9 @@ > pinctrl-names = "default"; > pinctrl-0 = <&pins_nemc>; > > + assigned-clocks = <&cgu JZ4780_CLK_BCH>; > + assigned-clock-rates = <200000000>; > + > nand@1 { > reg = <1>; >
Hi, On Fri, Jan 18, 2019 at 5:07 AM, Boris Brezillon <bbrezillon@kernel.org> wrote: > Hi Paul, > > On Thu, 17 Jan 2019 22:06:27 -0300 > Paul Cercueil <paul@crapouillou.net <mailto:paul@crapouillou.net>> > wrote: > >> This is currently done inside the jz4780-bch driver, but it really >> should be done here instead. >> > > I disagree with that statement. If it's a per-SoC constraint then you > can select the appropriate rate based on the compatible in the driver. > If the clock rate depends on the NAND chip it probably means it's used > to generate the RE/WE pulse and should depend on the NAND timings > passed to ->setup_data_interface(). In either case, this should not be > specified in the DT. Alright, I'll drop the patch. > Regards, > > Boris > >> Signed-off-by: Paul Cercueil <paul@crapouillou.net >> <mailto:paul@crapouillou.net>> >> --- >> arch/mips/boot/dts/ingenic/ci20.dts | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/arch/mips/boot/dts/ingenic/ci20.dts >> b/arch/mips/boot/dts/ingenic/ci20.dts >> index 50cff3cbcc6d..aa892ec54d0a 100644 >> --- a/arch/mips/boot/dts/ingenic/ci20.dts >> +++ b/arch/mips/boot/dts/ingenic/ci20.dts >> @@ -111,6 +111,9 @@ >> pinctrl-names = "default"; >> pinctrl-0 = <&pins_nemc>; >> >> + assigned-clocks = <&cgu JZ4780_CLK_BCH>; >> + assigned-clock-rates = <200000000>; >> + >> nand@1 { >> reg = <1>; >> >
diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts index 50cff3cbcc6d..aa892ec54d0a 100644 --- a/arch/mips/boot/dts/ingenic/ci20.dts +++ b/arch/mips/boot/dts/ingenic/ci20.dts @@ -111,6 +111,9 @@ pinctrl-names = "default"; pinctrl-0 = <&pins_nemc>; + assigned-clocks = <&cgu JZ4780_CLK_BCH>; + assigned-clock-rates = <200000000>; + nand@1 { reg = <1>;
This is currently done inside the jz4780-bch driver, but it really should be done here instead. Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- arch/mips/boot/dts/ingenic/ci20.dts | 3 +++ 1 file changed, 3 insertions(+)