From 0222de711db11507773604084e20ad6d6960d30b Mon Sep 17 00:00:00 2001 From: wavelet2 Date: Mon, 26 Mar 2018 21:05:10 +0100 Subject: [PATCH 264/454] Add overlay for JEDEC SPI NOR flash --- arch/arm/boot/dts/overlays/Makefile | 1 + arch/arm/boot/dts/overlays/README | 9 + .../dts/overlays/jedec-spi-nor-overlay.dts | 309 ++++++++++++++++++ 3 files changed, 319 insertions(+) create mode 100644 arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts --- a/arch/arm/boot/dts/overlays/Makefile +++ b/arch/arm/boot/dts/overlays/Makefile @@ -55,6 +55,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ iqaudio-dac.dtbo \ iqaudio-dacplus.dtbo \ iqaudio-digi-wm8804-audio.dtbo \ + jedec-spi-nor.dtbo \ justboom-dac.dtbo \ justboom-digi.dtbo \ lirc-rpi.dtbo \ --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -939,6 +939,15 @@ Params: card_name Override dai stream name. +Name: jedec-spi-nor +Info: Adds support for JEDEC-compliant SPI NOR flash devices. (Note: The + "jedec,spi-nor" kernel driver was formerly known as "m25p80".) +Load: dtoverlay=jedec-spi-nor,= +Params: flash-spi- Enables flash device on SPI, CS#. + flash-fastr-spi- Enables flash device with fast read capability + on SPI, CS#. + + Name: justboom-dac Info: Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio cards --- /dev/null +++ b/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts @@ -0,0 +1,309 @@ +// Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80) + +// dtparams: +// flash-spi- - Enables flash device on SPI, CS#. +// flash-fastr-spi- - Enables flash device with fast read capability on SPI, CS#. +// +// If devices are present on SPI1 or SPI2, those interfaces must be enabled with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays. +// +// Example: A single flash device with fast read capability on SPI0, CS#0: +// dtoverlay=jedec-spi-nor:flash-fastr-spi0-0 + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + // disable spi-dev on spi0.0 + fragment@0 { + target = <&spidev0>; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi0.1 + fragment@1 { + target = <&spidev1>; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi1.0 + fragment@2 { + target-path = "spi1/spidev@0"; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi1.1 + fragment@3 { + target-path = "spi1/spidev@1"; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi1.2 + fragment@4 { + target-path = "spi1/spidev@2"; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi2.0 + fragment@5 { + target-path = "spi2/spidev@0"; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi2.1 + fragment@6 { + target-path = "spi2/spidev@1"; + __dormant__ { + status = "disabled"; + }; + }; + + // disable spi-dev on spi2.2 + fragment@7 { + target-path = "spi2/spidev@2"; + __dormant__ { + status = "disabled"; + }; + }; + + // enable flash on spi0.0 + fragment@8 { + target = <&spi0>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_00: spi_nor@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi0.1 + fragment@9 { + target = <&spi0>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_01: spi_nor@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <1>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi1.0 + fragment@10 { + target = <&spi1>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_10: spi_nor@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi1.1 + fragment@11 { + target = <&spi1>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_11: spi_nor@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <1>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi1.2 + fragment@12 { + target = <&spi1>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_12: spi_nor@2 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <2>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi2.0 + fragment@13 { + target = <&spi2>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_20: spi_nor@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi2.1 + fragment@14 { + target = <&spi2>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_21: spi_nor@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <1>; + spi-max-frequency = <500000>; + }; + }; + }; + + // enable flash on spi2.2 + fragment@15 { + target = <&spi2>; + __dormant__ { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + spi_nor_22: spi_nor@2 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + reg = <2>; + spi-max-frequency = <500000>; + }; + }; + }; + + // Enable fast read for device on spi0.0. + // Use default active low interrupt signalling. + fragment@16 { + target = <&spi_nor_00>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi0.1. + // Use default active low interrupt signalling. + fragment@17 { + target = <&spi_nor_01>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi1.0. + // Use default active low interrupt signalling. + fragment@18 { + target = <&spi_nor_10>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi1.1. + // Use default active low interrupt signalling. + fragment@19 { + target = <&spi_nor_11>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi1.2. + // Use default active low interrupt signalling. + fragment@20 { + target = <&spi_nor_12>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi2.0. + // Use default active low interrupt signalling. + fragment@21 { + target = <&spi_nor_20>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi2.1. + // Use default active low interrupt signalling. + fragment@22 { + target = <&spi_nor_21>; + __dormant__ { + m25p,fast-read; + }; + }; + + // Enable fast read for device on spi2.2. + // Use default active low interrupt signalling. + fragment@23 { + target = <&spi_nor_22>; + __dormant__ { + m25p,fast-read; + }; + }; + + __overrides__ { + flash-spi0-0 = <0>,"+0+8"; + flash-spi0-1 = <0>,"+1+9"; + flash-spi1-0 = <0>,"+2+10"; + flash-spi1-1 = <0>,"+3+11"; + flash-spi1-2 = <0>,"+4+12"; + flash-spi2-0 = <0>,"+5+13"; + flash-spi2-1 = <0>,"+6+14"; + flash-spi2-2 = <0>,"+7+15"; + flash-fastr-spi0-0 = <0>,"+0+8+16"; + flash-fastr-spi0-1 = <0>,"+1+9+17"; + flash-fastr-spi1-0 = <0>,"+2+10+18"; + flash-fastr-spi1-1 = <0>,"+3+11+19"; + flash-fastr-spi1-2 = <0>,"+4+12+20"; + flash-fastr-spi2-0 = <0>,"+5+13+21"; + flash-fastr-spi2-1 = <0>,"+6+14+22"; + flash-fastr-spi2-2 = <0>,"+7+15+23"; + }; +}; +