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353 lines
8.3 KiB
Diff
353 lines
8.3 KiB
Diff
From 0222de711db11507773604084e20ad6d6960d30b Mon Sep 17 00:00:00 2001
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From: wavelet2 <a3d35232@btinternet.com>
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Date: Mon, 26 Mar 2018 21:05:10 +0100
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Subject: [PATCH 264/454] Add overlay for JEDEC SPI NOR flash
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 9 +
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.../dts/overlays/jedec-spi-nor-overlay.dts | 309 ++++++++++++++++++
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3 files changed, 319 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -55,6 +55,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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iqaudio-dac.dtbo \
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iqaudio-dacplus.dtbo \
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iqaudio-digi-wm8804-audio.dtbo \
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+ jedec-spi-nor.dtbo \
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justboom-dac.dtbo \
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justboom-digi.dtbo \
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lirc-rpi.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -939,6 +939,15 @@ Params: card_name Override
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dai stream name.
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+Name: jedec-spi-nor
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+Info: Adds support for JEDEC-compliant SPI NOR flash devices. (Note: The
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+ "jedec,spi-nor" kernel driver was formerly known as "m25p80".)
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+Load: dtoverlay=jedec-spi-nor,<param>=<val>
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+Params: flash-spi<n>-<m> Enables flash device on SPI<n>, CS#<m>.
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+ flash-fastr-spi<n>-<m> Enables flash device with fast read capability
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+ on SPI<n>, CS#<m>.
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+
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+
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Name: justboom-dac
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Info: Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio
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cards
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
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@@ -0,0 +1,309 @@
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+// Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80)
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+
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+// dtparams:
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+// flash-spi<n>-<m> - Enables flash device on SPI<n>, CS#<m>.
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+// flash-fastr-spi<n>-<m> - Enables flash device with fast read capability on SPI<n>, CS#<m>.
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+//
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+// 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.
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+//
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+// Example: A single flash device with fast read capability on SPI0, CS#0:
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+// dtoverlay=jedec-spi-nor:flash-fastr-spi0-0
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
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+
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+ // disable spi-dev on spi0.0
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+ fragment@0 {
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+ target = <&spidev0>;
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi0.1
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+ fragment@1 {
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+ target = <&spidev1>;
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi1.0
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+ fragment@2 {
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+ target-path = "spi1/spidev@0";
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi1.1
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+ fragment@3 {
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+ target-path = "spi1/spidev@1";
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi1.2
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+ fragment@4 {
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+ target-path = "spi1/spidev@2";
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi2.0
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+ fragment@5 {
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+ target-path = "spi2/spidev@0";
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi2.1
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+ fragment@6 {
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+ target-path = "spi2/spidev@1";
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // disable spi-dev on spi2.2
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+ fragment@7 {
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+ target-path = "spi2/spidev@2";
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+ __dormant__ {
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+ status = "disabled";
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+ };
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+ };
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+
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+ // enable flash on spi0.0
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+ fragment@8 {
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+ target = <&spi0>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_00: spi_nor@0 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <0>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi0.1
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+ fragment@9 {
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+ target = <&spi0>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_01: spi_nor@1 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <1>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi1.0
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+ fragment@10 {
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+ target = <&spi1>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_10: spi_nor@0 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <0>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi1.1
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+ fragment@11 {
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+ target = <&spi1>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_11: spi_nor@1 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <1>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi1.2
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+ fragment@12 {
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+ target = <&spi1>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_12: spi_nor@2 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <2>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi2.0
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+ fragment@13 {
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+ target = <&spi2>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_20: spi_nor@0 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <0>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi2.1
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+ fragment@14 {
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+ target = <&spi2>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_21: spi_nor@1 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <1>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // enable flash on spi2.2
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+ fragment@15 {
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+ target = <&spi2>;
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+ __dormant__ {
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+ status = "okay";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ spi_nor_22: spi_nor@2 {
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ compatible = "jedec,spi-nor";
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+ reg = <2>;
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+ spi-max-frequency = <500000>;
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+ };
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+ };
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+ };
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+
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+ // Enable fast read for device on spi0.0.
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+ // Use default active low interrupt signalling.
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+ fragment@16 {
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+ target = <&spi_nor_00>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi0.1.
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+ // Use default active low interrupt signalling.
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+ fragment@17 {
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+ target = <&spi_nor_01>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi1.0.
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+ // Use default active low interrupt signalling.
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+ fragment@18 {
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+ target = <&spi_nor_10>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi1.1.
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+ // Use default active low interrupt signalling.
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+ fragment@19 {
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+ target = <&spi_nor_11>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi1.2.
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+ // Use default active low interrupt signalling.
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+ fragment@20 {
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+ target = <&spi_nor_12>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi2.0.
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+ // Use default active low interrupt signalling.
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+ fragment@21 {
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+ target = <&spi_nor_20>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi2.1.
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+ // Use default active low interrupt signalling.
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+ fragment@22 {
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+ target = <&spi_nor_21>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ // Enable fast read for device on spi2.2.
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+ // Use default active low interrupt signalling.
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+ fragment@23 {
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+ target = <&spi_nor_22>;
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+ __dormant__ {
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+ m25p,fast-read;
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+ };
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+ };
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+
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+ __overrides__ {
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+ flash-spi0-0 = <0>,"+0+8";
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+ flash-spi0-1 = <0>,"+1+9";
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+ flash-spi1-0 = <0>,"+2+10";
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+ flash-spi1-1 = <0>,"+3+11";
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+ flash-spi1-2 = <0>,"+4+12";
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+ flash-spi2-0 = <0>,"+5+13";
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+ flash-spi2-1 = <0>,"+6+14";
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+ flash-spi2-2 = <0>,"+7+15";
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+ flash-fastr-spi0-0 = <0>,"+0+8+16";
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+ flash-fastr-spi0-1 = <0>,"+1+9+17";
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+ flash-fastr-spi1-0 = <0>,"+2+10+18";
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+ flash-fastr-spi1-1 = <0>,"+3+11+19";
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+ flash-fastr-spi1-2 = <0>,"+4+12+20";
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+ flash-fastr-spi2-0 = <0>,"+5+13+21";
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+ flash-fastr-spi2-1 = <0>,"+6+14+22";
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+ flash-fastr-spi2-2 = <0>,"+7+15+23";
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+ };
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+};
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+
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