On 3/5/21 9:09 PM, Pratyush Yadav wrote:
> TI J7200 has the Cadence OSPI controller for interfacing with OSPI
> flashes. Add its node to allow using SPI flashes.
>
> Signed-off-by: Pratyush Yadav <p.yadav@xxxxxx>
> ---
Reviewed-by: Vignesh Raghavendra <vigneshr@xxxxxx>
>
> Notes:
> Changes in v2:
> - Do not force a pulldown on the DQS line because it already has a
> pulldown resistor.
>
> .../boot/dts/ti/k3-j7200-mcu-wakeup.dtsi | 17 +++++++++
> arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 36 +++++++++++++++++++
> 2 files changed, 53 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
> index 359e3e8a8cd0..5408ec815d58 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
> @@ -269,6 +269,23 @@ hbmc: hyperbus@47034000 {
> #size-cells = <1>;
> mux-controls = <&hbmc_mux 0>;
> };
> +
> + ospi0: spi@47040000 {
> + compatible = "ti,am654-ospi";
> + reg = <0x0 0x47040000 0x0 0x100>,
> + <0x5 0x00000000 0x1 0x0000000>;
> + interrupts = <GIC_SPI 840 IRQ_TYPE_LEVEL_HIGH>;
> + cdns,fifo-depth = <256>;
> + cdns,fifo-width = <4>;
> + cdns,trigger-address = <0x0>;
> + clocks = <&k3_clks 103 0>;
> + assigned-clocks = <&k3_clks 103 0>;
> + assigned-clock-parents = <&k3_clks 103 2>;
> + assigned-clock-rates = <166666666>;
> + power-domains = <&k3_pds 103 TI_SCI_PD_EXCLUSIVE>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };
> };
>
> tscadc0: tscadc@40200000 {
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
> index a988e2ab2ba1..34724440171a 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
> @@ -100,6 +100,22 @@ J721E_WKUP_IOPAD(0x24, PIN_INPUT, 1) /* (A8) MCU_OSPI0_D6.MCU_HYPERBUS0_DQ6 */
> J721E_WKUP_IOPAD(0x28, PIN_INPUT, 1) /* (A7) MCU_OSPI0_D7.MCU_HYPERBUS0_DQ7 */
> >;
> };
> +
> + mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
> + pinctrl-single,pins = <
> + J721E_WKUP_IOPAD(0x0000, PIN_OUTPUT, 0) /* MCU_OSPI0_CLK */
> + J721E_WKUP_IOPAD(0x002c, PIN_OUTPUT, 0) /* MCU_OSPI0_CSn0 */
> + J721E_WKUP_IOPAD(0x000c, PIN_INPUT, 0) /* MCU_OSPI0_D0 */
> + J721E_WKUP_IOPAD(0x0010, PIN_INPUT, 0) /* MCU_OSPI0_D1 */
> + J721E_WKUP_IOPAD(0x0014, PIN_INPUT, 0) /* MCU_OSPI0_D2 */
> + J721E_WKUP_IOPAD(0x0018, PIN_INPUT, 0) /* MCU_OSPI0_D3 */
> + J721E_WKUP_IOPAD(0x001c, PIN_INPUT, 0) /* MCU_OSPI0_D4 */
> + J721E_WKUP_IOPAD(0x0020, PIN_INPUT, 0) /* MCU_OSPI0_D5 */
> + J721E_WKUP_IOPAD(0x0024, PIN_INPUT, 0) /* MCU_OSPI0_D6 */
> + J721E_WKUP_IOPAD(0x0028, PIN_INPUT, 0) /* MCU_OSPI0_D7 */
> + J721E_WKUP_IOPAD(0x0008, PIN_INPUT, 0) /* MCU_OSPI0_DQS */
> + >;
> + };
> };
>
> &main_pmx0 {
> @@ -235,3 +251,23 @@ exp_som: gpio@21 {
> "GPIO_LIN_EN", "CAN_STB";
> };
> };
> +
> +&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>;
> + };
> +};
>
