On 21/07/2018 21:28, Martin Blumenstingl wrote: > The Meson8/Meson8b/Meson8m2 SoCs are suffering from a similar problem > as the GXBB/GXL/GXM SoCs (see the GX series from Jerome: [0]): > There is a register area called "HHI" which is used for multiple IP > blocks of the SoC: > - the system clock controller > - a few reset lines (there is a separate reset controller, these reset > lines are not part of the other reset controller). this reset > controller is currently implemented in the clock controller driver > - a HDMI controller > - temperature sensor calibration data (by "data" I really mean data, > the ADC driver has four bits for the TSC data in it's own register > space, however on Meson8b and Meson8m2 there is a fifth TSC bit which > is stored in the HHI register area) > > The first three could be implemented with a single node (either in one > big driver, or using a MFD driver which would register function- > specific drivers). > However, the TSC data is a big problem, because the ADC has it's own > set of registers but needs to write one bit in the HHI register area. > > NOTE: this series has multiple dependencies: > - the clock controller changes depend "meson8b: add the CPU_DIV16 clock > for the ARM TWD" as well as "meson8b: register the clock controller > early" [2] > - the dts changes depend on "fix clock controller register size on > Meson8/Meson8b" [3] > > > [0] http://lists.infradead.org/pipermail/linux-amlogic/2018-March/006733.html > [1] http://lists.infradead.org/pipermail/linux-amlogic/2018-July/007890.html > [2] http://lists.infradead.org/pipermail/linux-amlogic/2018-July/007900.html > [3] http://lists.infradead.org/pipermail/linux-amlogic/2018-July/007897.html > > > Martin Blumenstingl (3): > dt-bindings: clock: meson8b: use the registers from the HHI syscon > clk: meson: meson8b: use the HHI syscon if available > ARM: dts: meson: switch the clock controller to the HHI register area > > .../bindings/clock/amlogic,meson8b-clkc.txt | 13 ++++------ > arch/arm/boot/dts/meson.dtsi | 5 ++++ > arch/arm/boot/dts/meson8.dtsi | 15 ++++++------ > arch/arm/boot/dts/meson8b.dtsi | 15 ++++++------ > drivers/clk/meson/meson8b.c | 24 ++++++++++++------- > 5 files changed, 41 insertions(+), 31 deletions(-) > For the whole serie, it follow the same switch as GX so : Acked-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> -- 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
