From: Sinthu Raja <sinthu.raja@xxxxxx> AM68 SK has an OSPI NOR flash on its SOM connected to OSPI0 instance. Enable support for the same. Also, describe the OSPI flash partition information through the device tree, according to the offsets in the bootloader. Signed-off-by: Sinthu Raja <sinthu.raja@xxxxxx> Signed-off-by: Udit Kumar <u-kumar1@xxxxxx> --- Bootlogs https://gist.github.com/uditkumarti/3a131e3c78f121cf8c2f703d307c02df#file-gistfile1-txt line 1451 Changes in v4: a. Added bootph properties b. INT pin is not used by flash drivers, so dropping this c. reverting partition 0 offset to 512KB, due to DFU boot failure seen on other K3 SOC with 1MB offset. Changes in v3: a. Fix the make dtbs_check error related to ospi pinctrl b. Increase the partition 0 size to 1MB and update the following partitions start address accordingly. Changes in v2: a. remove pin E20, which is not connected. v3: https://lore.kernel.org/all/20240226095231.35684-1-sinthu.raja@xxxxxx/ v2: https://lore.kernel.org/linux-arm-kernel/20240219075932.6458-1-sinthu.raja@xxxxxx/ v1: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20240206092334.30307-1-sinthu.raja@xxxxxx/ arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi | 81 ++++++++++++++++++++++ 1 file changed, 81 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi b/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi index 2ebb7daa822f..5c66e0ec6e82 100644 --- a/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-som.dtsi @@ -131,6 +131,25 @@ rtos_ipc_memory_region: ipc-memories@a8000000 { }; }; +&wkup_pmx0 { + mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins { + bootph-all; + 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(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 */ + >; + }; +}; + &wkup_pmx2 { wkup_i2c0_pins_default: wkup-i2c0-default-pins { pinctrl-single,pins = < @@ -153,6 +172,68 @@ eeprom@51 { }; }; +&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>; + + partitions { + bootph-all; + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "ospi.tiboot3"; + reg = <0x0 0x80000>; + }; + + partition@80000 { + label = "ospi.tispl"; + reg = <0x80000 0x200000>; + }; + + partition@280000 { + label = "ospi.u-boot"; + reg = <0x280000 0x400000>; + }; + + partition@680000 { + label = "ospi.env"; + reg = <0x680000 0x40000>; + }; + + partition@740000 { + label = "ospi.env.backup"; + reg = <0x740000 0x40000>; + }; + + partition@800000 { + label = "ospi.rootfs"; + reg = <0x800000 0x37c0000>; + }; + + partition@3fc0000 { + bootph-pre-ram; + label = "ospi.phypattern"; + reg = <0x3fc0000 0x40000>; + }; + }; + }; +}; + &mailbox0_cluster0 { status = "okay"; interrupts = <436>; -- 2.34.1
