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SubjectRe: [PATCH v2 3/5] ARM: dts: AM33xx-l4: Update PRUSS interconnect target-module node
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On 28/02/2020 00:28, Suman Anna wrote:
> The PRU-ICSS present on some AM33xx SoCs has a very unique SYSC
> register. The IP also uses a hard-reset line, and requires this
> PRCM reset to be deasserted to be able to access any registers.
> Update the existing PRUSS interconnect target-module with all
> the required properties.
>
> The PRUSS device itself shall be added as a child node to this
> interconnect node in the future. PRU-ICSS is not supported on
> AM3351/AM3352/AM3354 SoCs though in the AM33xx family, so the
> target module node should be disabled in derivative board files
> that use any of these SoCs.
>
> Signed-off-by: Suman Anna <s-anna@ti.com>

Reviewed-by: Roger Quadros <rogerq@ti.com>

> ---
> v2: Revise patch description, no code changes
>
> arch/arm/boot/dts/am33xx-l4.dtsi | 21 ++++++++++++++++++---
> 1 file changed, 18 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi
> index 4e2986f0c604..5ed7f3c58c0f 100644
> --- a/arch/arm/boot/dts/am33xx-l4.dtsi
> +++ b/arch/arm/boot/dts/am33xx-l4.dtsi
> @@ -759,12 +759,27 @@
> ranges = <0x0 0x200000 0x80000>;
> };
>
> - target-module@300000 { /* 0x4a300000, ap 9 04.0 */
> - compatible = "ti,sysc";
> - status = "disabled";
> + pruss_tm: target-module@300000 { /* 0x4a300000, ap 9 04.0 */
> + compatible = "ti,sysc-pruss", "ti,sysc";
> + reg = <0x326000 0x4>,
> + <0x326004 0x4>;
> + reg-names = "rev", "sysc";
> + ti,sysc-mask = <(SYSC_PRUSS_STANDBY_INIT |
> + SYSC_PRUSS_SUB_MWAIT)>;
> + 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 = <&pruss_ocp_clkctrl AM3_PRUSS_OCP_PRUSS_CLKCTRL 0>;
> + clock-names = "fck";
> + resets = <&prm_per 1>;
> + reset-names = "rstctrl";
> #address-cells = <1>;
> #size-cells = <1>;
> ranges = <0x0 0x300000 0x80000>;
> + status = "disabled";
> };
> };
> };
>

--
cheers,
-roger
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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