[PATCH 05/14] arch: arm: dts: k3-j7200: Configure pinctrl for timer IO pad

[Nishanth Menon]

On 09:43-20230503, Udit Kumar wrote:
> There are timer IO pads in the MCU domain, and in the MAIN domain. These
> pads can be muxed for the related timers.
> 
> There are timer IO control registers for input and output. The registers
> for CTRLMMR_TIMER*_CTRL and CTRLMMR_MCU_TIMER*_CTRL are used to control
> the input. The registers for CTCTRLMMR_TIMERIO*_CTRL and
> CTRLMMR_MCU_TIMERIO*_CTRL the output.
> 
> The multiplexing is documented in TRM "5.1.2.3.1.4 Timer IO Muxing Control
> Registers" and "5.1.3.3.1.5 Timer IO Muxing Control Registers", and the
> CASCADE_EN bit is documented in TRM "12.6.3.1 Timers Overview".
> 
> For chaining timers, the timer IO control registers also have a CASCADE_EN
> input bit in the CTRLMMR_TIMER*_CTRL in the registers. The CASCADE_EN bit
> muxes the previous timer output, or possibly and external TIMER_IO pad
> source, to the input clock of the selected timer instance for odd numered
> timers. For the even numbered timers, the CASCADE_EN bit does not do
> anything. The timer cascade input routing options are shown in TRM
> "Figure 12-3224. Timers Overview". For handling beyond multiplexing, the
> driver support for timer cascading should be likely be handled via the
> clock framework.
> 
> Cc: Nishanth Menon <nm at ti.com>
> Cc: Vignesh Raghavendra <vigneshr at ti.com>
> Cc: Tony Lindgren <tony at atomide.com>
> Signed-off-by: Udit Kumar <u-kumar1 at ti.com>
> ---
>  arch/arm/dts/k3-j7200-main.dtsi       | 18 ++++++++++++++++++
>  arch/arm/dts/k3-j7200-mcu-wakeup.dtsi | 18 ++++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm/dts/k3-j7200-main.dtsi b/arch/arm/dts/k3-j7200-main.dtsi
> index 54795db9c3..fb9e4842c1 100644
> --- a/arch/arm/dts/k3-j7200-main.dtsi
> +++ b/arch/arm/dts/k3-j7200-main.dtsi
> @@ -304,6 +304,24 @@
>  		};
>  	};
>  
> +	/* TIMERIO pad input CTRLMMR_TIMER*_CTRL registers */
> +	main_timerio_input: pinctrl at 104200 {
> +		compatible = "pinctrl-single";
> +		reg = <0x0 0x104200 0x0 0x50>;
> +		#pinctrl-cells = <1>;
> +		pinctrl-single,register-width = <32>;
> +		pinctrl-single,function-mask = <0x000001ff>;
> +	};
> +
> +	/* TIMERIO pad output CTCTRLMMR_TIMERIO*_CTRL registers */
> +	main_timerio_output: pinctrl at 104280 {
> +		compatible = "pinctrl-single";
> +		reg = <0x0 0x104280 0x0 0x20>;
> +		#pinctrl-cells = <1>;
> +		pinctrl-single,register-width = <32>;
> +		pinctrl-single,function-mask = <0x0000001f>;
> +	};
> +
>  	main_pmx0: pinctrl at 11c000 {
>  		compatible = "pinctrl-single";
>  		/* Proxy 0 addressing */
> diff --git a/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi b/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi
> index 02c2493064..7ed6c31c7c 100644
> --- a/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi
> +++ b/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi
> @@ -183,6 +183,24 @@
>  		reg = <0x00 0x43000014 0x00 0x4>;
>  	};
>  
> +	/* MCU_TIMERIO pad input CTRLMMR_MCU_TIMER*_CTRL registers */
> +	mcu_timerio_input: pinctrl at 40f04200 {
> +		compatible = "pinctrl-single";
> +		reg = <0x0 0x40f04200 0x0 0x28>;
> +		#pinctrl-cells = <1>;
> +		pinctrl-single,register-width = <32>;
> +		pinctrl-single,function-mask = <0x0000000F>;
> +	};
> +
> +	/* MCU_TIMERIO pad output CTRLMMR_MCU_TIMERIO*_CTRL registers */
> +	mcu_timerio_output: pinctrl at 40f04280 {
> +		compatible = "pinctrl-single";
> +		reg = <0x0 0x40f04280 0x0 0x28>;
> +		#pinctrl-cells = <1>;
> +		pinctrl-single,register-width = <32>;
> +		pinctrl-single,function-mask = <0x0000000F>;
> +	};
> +
>  	wkup_pmx0: pinctrl at 4301c000 {
>  		compatible = "pinctrl-single";
>  		/* Proxy 0 addressing */
> -- 
> 2.34.1
> 
Needs to get to k.org master.
-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D