linux-kernel - Re: [PATCH v7 6/8] arm64: dts: ti: k3-j721s2: Add support for OSPI Flashes

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Message-ID: <e5de300b-3410-edc1-1e22-ee3d43fe783e@ti.com>
Date:   Tue, 22 Nov 2022 19:34:06 +0530
From:   Vaishnav Achath <vaishnav.a@...com>
To:     Matt Ranostay <mranostay@...com>, <nm@...com>, <afd@...com>,
        <vigneshr@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <s-vadapalli@...com>,
        <r-gunasekaran@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Vaishnav Achath <vaishnav.a@...com>
Subject: Re: [PATCH v7 6/8] arm64: dts: ti: k3-j721s2: Add support for OSPI
 Flashes



On 22/11/22 15:46, Matt Ranostay wrote:
> From: Aswath Govindraju <a-govindraju@...com>
> 
> J721S2 has an OSPI NOR flash on its SOM connected the OSPI0 instance and a
> QSPI NOR flash on the common processor board connected to the OSPI1
> instance. Add support for the same
> 
> Signed-off-by: Aswath Govindraju <a-govindraju@...com>
> Signed-off-by: Matt Ranostay <mranostay@...com>
> ---
>  .../dts/ti/k3-j721s2-common-proc-board.dts    | 34 +++++++++++++++
>  arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi  | 42 +++++++++++++++++++
>  2 files changed, 76 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
> index c787d46f89de..0503e690cfaf 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
> @@ -206,6 +206,20 @@ mcu_mcan1_gpio_pins_default: mcu-mcan1-gpio-pins-default {
>  			J721S2_WKUP_IOPAD(0x0c8, PIN_INPUT, 7) /* (C28) WKUP_GPIO0_2 */
>  		>;
>  	};
> +
> +	mcu_fss0_ospi1_pins_default: mcu-fss0-ospi1-pins-default {
> +		pinctrl-single,pins = <
> +			J721S2_WKUP_IOPAD(0x040, PIN_OUTPUT, 0) /* (A19) MCU_OSPI1_CLK */
> +			J721S2_WKUP_IOPAD(0x05c, PIN_OUTPUT, 0) /* (D20) MCU_OSPI1_CSn0 */
> +			J721S2_WKUP_IOPAD(0x060, PIN_OUTPUT, 0) /* (C21) MCU_OSPI1_CSn1 */
> +			J721S2_WKUP_IOPAD(0x04c, PIN_INPUT, 0) /* (D21) MCU_OSPI1_D0 */
> +			J721S2_WKUP_IOPAD(0x050, PIN_INPUT, 0) /* (G20) MCU_OSPI1_D1 */
> +			J721S2_WKUP_IOPAD(0x054, PIN_INPUT, 0) /* (C20) MCU_OSPI1_D2 */
> +			J721S2_WKUP_IOPAD(0x058, PIN_INPUT, 0) /* (A20) MCU_OSPI1_D3 */
> +			J721S2_WKUP_IOPAD(0x048, PIN_INPUT, 0) /* (B19) MCU_OSPI1_DQS */
> +			J721S2_WKUP_IOPAD(0x044, PIN_INPUT, 0) /* (B20) MCU_OSPI1_LBCLKO */
> +		>;
> +	};
>  };
>  
>  &main_gpio2 {
> @@ -340,6 +354,26 @@ &usb0 {
>  	maximum-speed = "high-speed";
>  };
>  
> +&ospi1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mcu_fss0_ospi1_pins_default>;
> +
> +	flash@0{
> +		compatible = "jedec,spi-nor";
> +		reg = <0x0>;
> +		spi-tx-bus-width = <1>;
> +		spi-rx-bus-width = <4>;
> +		spi-max-frequency = <40000000>;
> +		cdns,tshsl-ns = <60>;
> +		cdns,tsd2d-ns = <60>;
> +		cdns,tchsh-ns = <60>;
> +		cdns,tslch-ns = <60>;
> +		cdns,read-delay = <2>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +	};
> +};
> +
>  &mcu_mcan0 {
>  	status = "okay";
>  	pinctrl-names = "default";
> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
> index 6930efff8a5a..2ffea00e19d7 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
> @@ -39,6 +39,28 @@ transceiver0: can-phy0 {
>  	};
>  };
>  
> +&wkup_pmx0 {
> +	mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
> +		pinctrl-single,pins = <
> +			J721S2_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (D19) MCU_OSPI0_CLK */
> +			J721S2_WKUP_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F15) MCU_OSPI0_CSn0 */
> +			J721S2_WKUP_IOPAD(0x030, PIN_OUTPUT, 0) /* (G17) MCU_OSPI0_CSn1 */
> +			J721S2_WKUP_IOPAD(0x038, PIN_OUTPUT, 0) /* (F14) MCU_OSPI0_CSn2 */
> +			J721S2_WKUP_IOPAD(0x03c, PIN_OUTPUT, 0) /* (F17) MCU_OSPI0_CSn3 */
> +			J721S2_WKUP_IOPAD(0x00c, PIN_INPUT, 0) /* (C19) MCU_OSPI0_D0 */
> +			J721S2_WKUP_IOPAD(0x010, PIN_INPUT, 0) /* (F16) MCU_OSPI0_D1 */
> +			J721S2_WKUP_IOPAD(0x014, PIN_INPUT, 0) /* (G15) MCU_OSPI0_D2 */
> +			J721S2_WKUP_IOPAD(0x018, PIN_INPUT, 0) /* (F18) MCU_OSPI0_D3 */
> +			J721S2_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (E19) MCU_OSPI0_D4 */
> +			J721S2_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (G19) MCU_OSPI0_D5 */
> +			J721S2_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (F19) MCU_OSPI0_D6 */
> +			J721S2_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (F20) MCU_OSPI0_D7 */
> +			J721S2_WKUP_IOPAD(0x008, PIN_INPUT, 0) /* (E18) MCU_OSPI0_DQS */
> +			J721S2_WKUP_IOPAD(0x004, PIN_INPUT, 0) /* (E20) MCU_OSPI0_LBCLKO */
> +		>;
> +	};
> +};
> +
>  &main_pmx0 {
>  	main_i2c0_pins_default: main-i2c0-pins-default {
>  		pinctrl-single,pins = <
> @@ -79,3 +101,23 @@ &main_mcan16 {
>  	pinctrl-names = "default";
>  	phys = <&transceiver0>;
>  };
> +
> +&ospi0 {
> +	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>;
> +	};

Reviewed-by: Vaishnav Achath <vaishnav.a@...com>

> +};

-- 
Regards,
Vaishnav