Hi, 2016-02-17 21:36 GMT+01:00 Carlo Caione <carlo@xxxxxxxxxx>: > On Wed, Feb 17, 2016 at 6:28 PM, Romain Perier <romain.perier@xxxxxxxxx> wrote: >> These are the CBUS registers used to retrieve the revision and the >> identifier of the SoC on Meson8. >> >> Signed-off-by: Romain Perier <romain.perier@xxxxxxxxx> >> --- >> arch/arm/boot/dts/meson8b.dtsi | 5 +++++ >> 1 file changed, 5 insertions(+) >> >> diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi >> index 0477a81..71009dc 100644 >> --- a/arch/arm/boot/dts/meson8b.dtsi >> +++ b/arch/arm/boot/dts/meson8b.dtsi >> @@ -99,6 +99,11 @@ >> }; >> }; >> >> + hwrev@c1107d4c { >> + compatible = "amlogic,meson8b-hwrev", "syscon"; >> + reg = <0xc1107d4c 0x460>; > > Interesting. Where did you get 0x460? Carlo, Arnd. Well, what I did is the following : - CBUS_PHY_BASE is 0xc1100000 (CBUS is a larger block of registers, like slcr on zynq) - the serial is at CBUS_PHY_BASE + 0x7d4c - the revision is at CBUS_PHY_BASE + 0x81a8 So I decided to create a device_node for hw revision at 0xc1107d4c, in this case the lenght is 0x460... Am I wrong ? > >> + }; >> + >> sram: sram@d9000000 { >> compatible = "mmio-sram"; >> reg = <0xd9000000 0x20000>; > > This patch fails to apply on the current master. Probably because you > have based this patch on a repo containing (as I can see) also my WiP > patches on SMP. I used linux-next with your patches on top of it yes... I will rebase it Thanks, Romain -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html