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Date:   Wed, 29 Mar 2023 07:45:12 -0500
From:   Nishanth Menon <nm@ti.com>
To:     Apurva Nandan <a-nandan@ti.com>
CC:     Vignesh Raghavendra <vigneshr@ti.com>,
        Tero Kristo <kristo@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] arm64: dts: ti: k3-j784s4-evm: Add OSPI0 flash support
Message-ID: <20230329124512.bjxuywwqrvwe2h5l@translate>
References: <20230329060057.13654-1-a-nandan@ti.com>
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On 11:30-20230329, Apurva Nandan wrote:
> Add support for OSPI flash connected to OSPI0 instance through FSS.
> Also enumerate OSPI1 instance in MCU DTSI.
> 
> Signed-off-by: Apurva Nandan <a-nandan@ti.com>
> ---
> 
> Changelog:
> - Fixed address 0x0 to 0x00
> - Fixed dtbs_check errors (removed syscon and created simple bus)
> - Fixed whitespace error
> 

>  arch/arm64/boot/dts/ti/k3-j784s4-evm.dts      | 45 +++++++++++++++++++
>  .../boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi     | 41 +++++++++++++++++
>  2 files changed, 86 insertions(+)

Please split this patch up as SoC and board dts changes.

> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
> index b9e23697a63b..cc8c2dda7bd2 100644
> --- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
> @@ -141,12 +141,57 @@ J784S4_IOPAD(0x020, PIN_INPUT, 7) /* (AJ35) MCAN15_RX.GPIO0_8 */
>  	};
>  };
>  
> +&wkup_pmx0 {
> +	mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
> +		pinctrl-single,pins = <
> +			J784S4_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (E32) MCU_OSPI0_CLK */
> +			J784S4_WKUP_IOPAD(0x02c, PIN_OUTPUT, 0) /* (A32) MCU_OSPI0_CSn0 */
> +			J784S4_WKUP_IOPAD(0x00c, PIN_INPUT, 0) /* (B33) MCU_OSPI0_D0 */
> +			J784S4_WKUP_IOPAD(0x010, PIN_INPUT, 0) /* (B32) MCU_OSPI0_D1 */
> +			J784S4_WKUP_IOPAD(0x014, PIN_INPUT, 0) /* (C33) MCU_OSPI0_D2 */
> +			J784S4_WKUP_IOPAD(0x018, PIN_INPUT, 0) /* (C35) MCU_OSPI0_D3 */
> +			J784S4_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (D33) MCU_OSPI0_D4 */
> +			J784S4_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (D34) MCU_OSPI0_D5 */
> +			J784S4_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (E34) MCU_OSPI0_D6 */
> +			J784S4_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (E33) MCU_OSPI0_D7 */
> +			J784S4_WKUP_IOPAD(0x008, PIN_INPUT, 0) /* (C34) MCU_OSPI0_DQS */
> +			J784S4_WKUP_IOPAD(0x03c, PIN_OUTPUT, 6) /* (C32) MCU_OSPI0_CSn3.MCU_OSPI0_ECC_FAIL */
> +			J784S4_WKUP_IOPAD(0x038, PIN_OUTPUT, 6) /* (B34) MCU_OSPI0_CSn2.MCU_OSPI0_RESET_OUT0 */
> +		>;
> +	};
> +};
> +
>  &main_uart8 {
>  	status = "okay";
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&main_uart8_pins_default>;
>  };
>  
> +&fss {
> +	status = "okay";
> +};
> +
> +&ospi0 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;
> +
> +	flash@0 {
> +		compatible = "jedec,spi-nor";
> +		reg = <0x0>;
> +		spi-tx-bus-width = <8>;
> +		spi-rx-bus-width = <8>;
> +		spi-max-frequency = <25000000>;
> +		cdns,tshsl-ns = <60>;
> +		cdns,tsd2d-ns = <60>;
> +		cdns,tchsh-ns = <60>;
> +		cdns,tslch-ns = <60>;
> +		cdns,read-delay = <4>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +	};
> +};
> +
>  &main_i2c0 {
>  	status = "okay";
>  	pinctrl-names = "default";
> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
> index 64bd3dee14aa..f825a8e4b452 100644
> --- a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
> @@ -309,4 +309,45 @@ cpts@3d000 {
>  			ti,cpts-periodic-outputs = <2>;
>  		};
>  	};
> +
> +	fss: bus@47000000 {
> +		compatible = "simple-bus";
> +		reg = <0x00 0x47000000 0x00 0x100>;
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		ospi0: spi@47040000 {
> +			compatible = "ti,am654-ospi", "cdns,qspi-nor";
> +			reg = <0x00 0x47040000 0x00 0x100>,
> +			      <0x05 0x0000000 0x01 0x0000000>;
> +			interrupts = <GIC_SPI 840 IRQ_TYPE_LEVEL_HIGH>;
> +			cdns,fifo-depth = <256>;
> +			cdns,fifo-width = <4>;
> +			cdns,trigger-address = <0x0>;
> +			clocks = <&k3_clks 161 7>;
> +			assigned-clocks = <&k3_clks 161 7>;
> +			assigned-clock-parents = <&k3_clks 161 9>;
> +			assigned-clock-rates = <166666666>;
> +			power-domains = <&k3_pds 161 TI_SCI_PD_EXCLUSIVE>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			status = "disabled";
> +		};
> +
> +		ospi1: spi@47050000 {
> +			compatible = "ti,am654-ospi", "cdns,qspi-nor";
> +			reg = <0x00 0x47050000 0x00 0x100>,
> +			      <0x07 0x0000000 0x01 0x0000000>;
> +			interrupts = <GIC_SPI 841 IRQ_TYPE_LEVEL_HIGH>;
> +			cdns,fifo-depth = <256>;
> +			cdns,fifo-width = <4>;
> +			cdns,trigger-address = <0x0>;
> +			clocks = <&k3_clks 162 7>;
> +			power-domains = <&k3_pds 162 TI_SCI_PD_EXCLUSIVE>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			status = "disabled";
> +		};
> +	};
>  };
> -- 
> 2.34.1
> 

-- 
Regards,
Nishanth Menon
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