Hi Tony,
> Am 14.08.2019 um 15:14 schrieb Tony Lindgren <tony@xxxxxxxxxxx>:
>
> The following can be tested via sysfs with the following to ensure the SGX
> module gets enabled and disabled properly:
>
> # echo on > /sys/bus/platform/devices/5600fe00.target-module/power/control
> # rwmem 0x5600fe00 # revision register
> 0x5600fe00 = 0x40000000
> # echo auto > /sys/bus/platform/devices/5600fe00.target-module/power/control
> # rwmem 0x5000fe00
> Bus error
>
> Note that this patch depends on the PRM rstctrl driver that has
> been recently posted.
Do you have a list of these patches or a git for pulling the complete set
of changes? Does it depend on mainline or linux-next?
I tried to find the correct patches but it does not seem to work for
me on beaglebone.
> If the child device driver(s) need to prevent
> rstctrl reset on PM runtime suspend, the drivers need to increase
> the usecount for the shared rstctrl reset that can be mapped also
> for the child device(s) or accessed via dev->parent.
>
> Cc: Adam Ford <aford173@xxxxxxxxx>
> Cc: Filip Matijević <filip.matijevic.pz@xxxxxxxxx>
> Cc: "H. Nikolaus Schaller" <hns@xxxxxxxxxxxxx>
> Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx>
> Cc: moaz korena <moaz@xxxxxxxxxx>
> Cc: Merlijn Wajer <merlijn@xxxxxxxxxx>
> Cc: Paweł Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx>
> Cc: Philipp Rossak <embed3d@xxxxxxxxx>
> Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/am33xx.dtsi | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
> --- a/arch/arm/boot/dts/am33xx.dtsi
> +++ b/arch/arm/boot/dts/am33xx.dtsi
> @@ -460,6 +460,31 @@
> <&edma 5 0>;
> dma-names = "tx", "rx";
> };
> +
> + target-module@56000000 {
> + compatible = "ti,sysc-omap4", "ti,sysc";
> + reg = <0x5600fe00 0x4>,
> + <0x5600fe10 0x4>;
> + reg-names = "rev", "sysc";
> + ti,sysc-midle = <SYSC_IDLE_FORCE>,
> + <SYSC_IDLE_NO>,
> + <SYSC_IDLE_SMART>;
> + ti,sysc-sidle = <SYSC_IDLE_FORCE>,
> + <SYSC_IDLE_NO>,
> + <SYSC_IDLE_SMART>;
> + clocks = <&gfx_l3_clkctrl AM3_GFX_L3_GFX_CLKCTRL 0>;
> + clock-names = "fck";
> + resets = <&prm_gfx 0>;
> + reset-names = "rstctrl";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0x56000000 0x1000000>;
> +
> + /*
> + * Closed source PowerVR driver, no child device
> + * binding or driver in mainline
> + */
> + };
> };
> };
>
> --
> 2.21.0
BR and thanks,
