[PATCH 07/13] ARM: imx: remove i.MX31 SoC support
Arnd Bergmann
arnd at kernel.org
Tue Sep 8 08:27:57 PDT 2026
From: Arnd Bergmann <arnd at arndb.de>
The Freescale i.MX31 was an early SoC based on the ARM1136r0 CPU core. It
was used in the Bug Labs modular computer but ultimately much less
popular than most other i.MX SoCs.
As the ARM1136r0 support is causing a lot of extra maintenance effort
to keep alive and there are no known users, remove i.MX31 in order to
allow removing support for that CPU core altogether.
The related i.MX35 is based on a slightly newer ARM1136r1 CPU core that
does not have this problem, so there is no reason to remove that.
Cc: Russell King <linux at armlinux.org.uk>
Cc: Frank Li <Frank.Li at nxp.com>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Rob Herring <robh at kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: imx at lists.linux.dev
Cc: devicetree at vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
arch/arm/Kconfig.debug | 9 -
arch/arm/boot/dts/nxp/imx/Makefile | 3 -
arch/arm/boot/dts/nxp/imx/imx31-bug.dts | 22 --
arch/arm/boot/dts/nxp/imx/imx31-lite.dts | 178 -----------
arch/arm/boot/dts/nxp/imx/imx31.dtsi | 371 -----------------------
arch/arm/configs/imx_v6_v7_defconfig | 1 -
arch/arm/mach-imx/Kconfig | 11 -
arch/arm/mach-imx/Makefile | 1 -
arch/arm/mach-imx/cpu-imx31.c | 72 -----
arch/arm/mach-imx/mach-imx31.c | 18 --
arch/arm/mach-imx/mm-imx3.c | 44 ---
11 files changed, 730 deletions(-)
delete mode 100644 arch/arm/boot/dts/nxp/imx/imx31-bug.dts
delete mode 100644 arch/arm/boot/dts/nxp/imx/imx31-lite.dts
delete mode 100644 arch/arm/boot/dts/nxp/imx/imx31.dtsi
delete mode 100644 arch/arm/mach-imx/cpu-imx31.c
delete mode 100644 arch/arm/mach-imx/mach-imx31.c
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index e2fc89055463..52387fe2a057 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -424,13 +424,6 @@ choice
Say Y here if you want kernel low-level debugging support
on i.MX28.
- config DEBUG_IMX31_UART
- bool "i.MX31 Debug UART"
- depends on SOC_IMX31
- help
- Say Y here if you want kernel low-level debugging support
- on i.MX31.
-
config DEBUG_IMX35_UART
bool "i.MX35 Debug UART"
depends on SOC_IMX35
@@ -1411,7 +1404,6 @@ config DEBUG_IMX_UART_PORT
depends on DEBUG_IMX1_UART || \
DEBUG_IMX25_UART || \
DEBUG_IMX27_UART || \
- DEBUG_IMX31_UART || \
DEBUG_IMX35_UART || \
DEBUG_IMX50_UART || \
DEBUG_IMX51_UART || \
@@ -1468,7 +1460,6 @@ config DEBUG_LL_INCLUDE
default "debug/imx.S" if DEBUG_IMX1_UART || \
DEBUG_IMX25_UART || \
DEBUG_IMX27_UART || \
- DEBUG_IMX31_UART || \
DEBUG_IMX35_UART || \
DEBUG_IMX50_UART || \
DEBUG_IMX51_UART || \
diff --git a/arch/arm/boot/dts/nxp/imx/Makefile b/arch/arm/boot/dts/nxp/imx/Makefile
index 1a2539fa19b4..e0747cb6e772 100644
--- a/arch/arm/boot/dts/nxp/imx/Makefile
+++ b/arch/arm/boot/dts/nxp/imx/Makefile
@@ -16,9 +16,6 @@ dtb-$(CONFIG_SOC_IMX27) += \
imx27-pdk.dtb \
imx27-phytec-phycore-rdk.dtb \
imx27-phytec-phycard-s-rdk.dtb
-dtb-$(CONFIG_SOC_IMX31) += \
- imx31-bug.dtb \
- imx31-lite.dtb
dtb-$(CONFIG_SOC_IMX35) += \
imx35-eukrea-mbimxsd35-baseboard.dtb \
imx35-pdk.dtb
diff --git a/arch/arm/boot/dts/nxp/imx/imx31-bug.dts b/arch/arm/boot/dts/nxp/imx/imx31-bug.dts
deleted file mode 100644
index d87eee3f9b3c..000000000000
--- a/arch/arm/boot/dts/nxp/imx/imx31-bug.dts
+++ /dev/null
@@ -1,22 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright 2012 Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
- */
-
-/dts-v1/;
-#include "imx31.dtsi"
-
-/ {
- model = "Buglabs i.MX31 Bug 1.x";
- compatible = "buglabs,imx31-bug", "fsl,imx31";
-
- memory at 80000000 {
- device_type = "memory";
- reg = <0x80000000 0x8000000>; /* 128M */
- };
-};
-
-&uart5 {
- uart-has-rtscts;
- status = "okay";
-};
diff --git a/arch/arm/boot/dts/nxp/imx/imx31-lite.dts b/arch/arm/boot/dts/nxp/imx/imx31-lite.dts
deleted file mode 100644
index 630f8fa69ba8..000000000000
--- a/arch/arm/boot/dts/nxp/imx/imx31-lite.dts
+++ /dev/null
@@ -1,178 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-//
-// Copyright (C) 2016-2018 Vladimir Zapolskiy <vz at mleia.com>
-
-/dts-v1/;
-
-#include "imx31.dtsi"
-
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/interrupt-controller/irq.h>
-
-/ {
- model = "LogicPD i.MX31 Lite";
- compatible = "logicpd,imx31-lite", "fsl,imx31";
-
- chosen {
- stdout-path = &uart1;
- };
-
- memory at 80000000 {
- device_type = "memory";
- reg = <0x80000000 0x8000000>;
- };
-
- leds {
- compatible = "gpio-leds";
-
- led0 {
- gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
- };
-
- led1 {
- gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
- };
- };
-};
-
-&ata {
- status = "okay";
-};
-
-&nfc {
- nand-bus-width = <8>;
- nand-ecc-mode = "hw";
- nand-on-flash-bbt;
- status = "okay";
-};
-
-&sdhci1 {
- bus-width = <4>;
- cd-gpios = <&gpio2 11 GPIO_ACTIVE_HIGH>;
- wp-gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
- status = "okay";
-};
-
-&spi2 {
- status = "okay";
-
- pmic at 0 {
- compatible = "fsl,mc13783";
- reg = <0>;
- spi-cs-high;
- spi-max-frequency = <1000000>;
- interrupt-parent = <&gpio1>;
- interrupts = <3 IRQ_TYPE_EDGE_RISING>;
-
- fsl,mc13xxx-uses-adc;
- fsl,mc13xxx-uses-rtc;
-
- regulators {
- sw1a { /* QVCC */
- regulator-min-microvolt = <1200000>;
- regulator-max-microvolt = <1500000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- sw1b { /* QVCC */
- regulator-min-microvolt = <1200000>;
- regulator-max-microvolt = <1500000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- sw2a { /* 1.8V_DDR, NVCC2, NVCC21 and NVCC22 */
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- sw2b { /* NVCC10 */
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- violo { /* NVCC1 and NVCC7 */
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- viohi { /* VIOHI */
- regulator-min-microvolt = <2775000>;
- regulator-max-microvolt = <2775000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- vaudio { /* VAUDIO */
- regulator-min-microvolt = <2775000>;
- regulator-max-microvolt = <2775000>;
- };
-
- vcam { /* NVCC4 */
- regulator-min-microvolt = <2800000>;
- regulator-max-microvolt = <2800000>;
- };
-
- vgen { /* NVCC5 / NVCC8 and NVCC6 / NVCC9 */
- regulator-min-microvolt = <2775000>;
- regulator-max-microvolt = <2775000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- vmmc2 { /* NVCC3 */
- regulator-min-microvolt = <1600000>;
- regulator-max-microvolt = <3000000>;
- regulator-always-on;
- regulator-boot-on;
- };
- };
- };
-};
-
-&uart1 {
- uart-has-rtscts;
- status = "okay";
-};
-
-/* Routed to the extension board */
-&uart2 {
- uart-has-rtscts;
- status = "okay";
-};
-
-/* Routed to the extension board */
-&uart3 {
- uart-has-rtscts;
- status = "okay";
-};
-
-&weim {
- status = "okay";
-
- flash at 0,0 {
- compatible = "cfi-flash";
- reg = <0 0x0 0x200000>;
- bank-width = <2>;
- linux,mtd-name = "physmap-flash.0";
- fsl,weim-cs-timing = <0x0000cf03 0xa0330d01 0x00220800>;
- };
-
- ethernet at 4,0 {
- compatible = "smsc,lan9117", "smsc,lan9115";
- reg = <4 0x0 0x100>;
- interrupt-parent = <&gpio1>;
- interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
- phy-mode = "mii";
- reg-io-width = <2>;
- smsc,irq-push-pull;
- fsl,weim-cs-timing = <0x00008701 0x04000541 0x00010000>;
- };
-};
diff --git a/arch/arm/boot/dts/nxp/imx/imx31.dtsi b/arch/arm/boot/dts/nxp/imx/imx31.dtsi
deleted file mode 100644
index c58f855ea851..000000000000
--- a/arch/arm/boot/dts/nxp/imx/imx31.dtsi
+++ /dev/null
@@ -1,371 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-//
-// Copyright 2016-2018 Vladimir Zapolskiy <vz at mleia.com>
-// Copyright 2012 Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
-
-/ {
- #address-cells = <1>;
- #size-cells = <1>;
- /*
- * The decompressor and also some bootloaders rely on a
- * pre-existing /chosen node to be available to insert the
- * command line and merge other ATAGS info.
- */
- chosen {};
-
- aliases {
- gpio0 = &gpio1;
- gpio1 = &gpio2;
- gpio2 = &gpio3;
- i2c0 = &i2c1;
- i2c1 = &i2c2;
- i2c2 = &i2c3;
- serial0 = &uart1;
- serial1 = &uart2;
- serial2 = &uart3;
- serial3 = &uart4;
- serial4 = &uart5;
- spi0 = &spi1;
- spi1 = &spi2;
- spi2 = &spi3;
- };
-
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
-
- cpu at 0 {
- compatible = "arm,arm1136jf-s";
- device_type = "cpu";
- reg = <0>;
- };
- };
-
- avic: interrupt-controller at 68000000 {
- compatible = "fsl,imx31-avic", "fsl,avic";
- interrupt-controller;
- #interrupt-cells = <1>;
- reg = <0x68000000 0x100000>;
- };
-
- soc: soc {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "simple-bus";
- interrupt-parent = <&avic>;
- ranges;
-
- iram: sram at 1fffc000 {
- compatible = "mmio-sram";
- reg = <0x1fffc000 0x4000>;
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0 0x1fffc000 0x4000>;
- };
-
- aips1: bus at 43f00000 { /* AIPS1 */
- compatible = "fsl,aips-bus", "simple-bus";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <0x43f00000 0x100000>;
- ranges;
-
- i2c1: i2c at 43f80000 {
- compatible = "fsl,imx31-i2c", "fsl,imx21-i2c";
- reg = <0x43f80000 0x4000>;
- interrupts = <10>;
- clocks = <&clks 33>;
- #address-cells = <1>;
- #size-cells = <0>;
- status = "disabled";
- };
-
- i2c3: i2c at 43f84000 {
- compatible = "fsl,imx31-i2c", "fsl,imx21-i2c";
- reg = <0x43f84000 0x4000>;
- interrupts = <3>;
- clocks = <&clks 35>;
- #address-cells = <1>;
- #size-cells = <0>;
- status = "disabled";
- };
-
- ata: ata at 43f8c000 {
- compatible = "fsl,imx31-pata", "fsl,imx27-pata";
- reg = <0x43f8c000 0x4000>;
- interrupts = <15>;
- clocks = <&clks 26>;
- status = "disabled";
- };
-
- uart1: serial at 43f90000 {
- compatible = "fsl,imx31-uart", "fsl,imx21-uart";
- reg = <0x43f90000 0x4000>;
- interrupts = <45>;
- clocks = <&clks 10>, <&clks 30>;
- clock-names = "ipg", "per";
- status = "disabled";
- };
-
- uart2: serial at 43f94000 {
- compatible = "fsl,imx31-uart", "fsl,imx21-uart";
- reg = <0x43f94000 0x4000>;
- interrupts = <32>;
- clocks = <&clks 10>, <&clks 31>;
- clock-names = "ipg", "per";
- status = "disabled";
- };
-
- i2c2: i2c at 43f98000 {
- compatible = "fsl,imx31-i2c", "fsl,imx21-i2c";
- reg = <0x43f98000 0x4000>;
- interrupts = <4>;
- clocks = <&clks 34>;
- #address-cells = <1>;
- #size-cells = <0>;
- status = "disabled";
- };
-
- spi1: spi at 43fa4000 {
- compatible = "fsl,imx31-cspi";
- reg = <0x43fa4000 0x4000>;
- interrupts = <14>;
- clocks = <&clks 10>, <&clks 53>;
- clock-names = "ipg", "per";
- dmas = <&sdma 8 8 0>, <&sdma 9 8 0>;
- dma-names = "rx", "tx";
- #address-cells = <1>;
- #size-cells = <0>;
- status = "disabled";
- };
-
- kpp: kpp at 43fa8000 {
- compatible = "fsl,imx31-kpp", "fsl,imx21-kpp";
- reg = <0x43fa8000 0x4000>;
- interrupts = <24>;
- clocks = <&clks 46>;
- status = "disabled";
- };
-
- uart4: serial at 43fb0000 {
- compatible = "fsl,imx31-uart", "fsl,imx21-uart";
- reg = <0x43fb0000 0x4000>;
- clocks = <&clks 10>, <&clks 49>;
- clock-names = "ipg", "per";
- interrupts = <46>;
- status = "disabled";
- };
-
- uart5: serial at 43fb4000 {
- compatible = "fsl,imx31-uart", "fsl,imx21-uart";
- reg = <0x43fb4000 0x4000>;
- interrupts = <47>;
- clocks = <&clks 10>, <&clks 50>;
- clock-names = "ipg", "per";
- status = "disabled";
- };
- };
-
- spba-bus at 50000000 {
- compatible = "fsl,spba-bus", "simple-bus";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <0x50000000 0x100000>;
- ranges;
-
- sdhci1: mmc at 50004000 {
- compatible = "fsl,imx31-mmc";
- reg = <0x50004000 0x4000>;
- interrupts = <9>;
- clocks = <&clks 10>, <&clks 20>;
- clock-names = "ipg", "per";
- dmas = <&sdma 20 3 0>;
- dma-names = "rx-tx";
- status = "disabled";
- };
-
- sdhci2: mmc at 50008000 {
- compatible = "fsl,imx31-mmc";
- reg = <0x50008000 0x4000>;
- interrupts = <8>;
- clocks = <&clks 10>, <&clks 21>;
- clock-names = "ipg", "per";
- dmas = <&sdma 21 3 0>;
- dma-names = "rx-tx";
- status = "disabled";
- };
-
- uart3: serial at 5000c000 {
- compatible = "fsl,imx31-uart", "fsl,imx21-uart";
- reg = <0x5000c000 0x4000>;
- interrupts = <18>;
- clocks = <&clks 10>, <&clks 48>;
- clock-names = "ipg", "per";
- status = "disabled";
- };
-
- spi2: spi at 50010000 {
- compatible = "fsl,imx31-cspi";
- reg = <0x50010000 0x4000>;
- interrupts = <13>;
- clocks = <&clks 10>, <&clks 54>;
- clock-names = "ipg", "per";
- dmas = <&sdma 6 8 0>, <&sdma 7 8 0>;
- dma-names = "rx", "tx";
- #address-cells = <1>;
- #size-cells = <0>;
- status = "disabled";
- };
-
- iim: efuse at 5001c000 {
- compatible = "fsl,imx31-iim";
- reg = <0x5001c000 0x1000>;
- interrupts = <19>;
- clocks = <&clks 25>;
- };
- };
-
- bus at 53f00000 { /* AIPS2 */
- compatible = "fsl,aips-bus", "simple-bus";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <0x53f00000 0x100000>;
- ranges;
-
- clks: ccm at 53f80000 {
- compatible = "fsl,imx31-ccm";
- reg = <0x53f80000 0x4000>;
- interrupts = <31>, <53>;
- #clock-cells = <1>;
- };
-
- spi3: spi at 53f84000 {
- compatible = "fsl,imx31-cspi";
- reg = <0x53f84000 0x4000>;
- interrupts = <17>;
- clocks = <&clks 10>, <&clks 28>;
- clock-names = "ipg", "per";
- dmas = <&sdma 10 8 0>, <&sdma 11 8 0>;
- dma-names = "rx", "tx";
- #address-cells = <1>;
- #size-cells = <0>;
- status = "disabled";
- };
-
- gpt: timer at 53f90000 {
- compatible = "fsl,imx31-gpt";
- reg = <0x53f90000 0x4000>;
- interrupts = <29>;
- clocks = <&clks 10>, <&clks 22>;
- clock-names = "ipg", "per";
- };
-
- gpio3: gpio at 53fa4000 {
- compatible = "fsl,imx31-gpio";
- reg = <0x53fa4000 0x4000>;
- interrupts = <56>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- rng at 53fb0000 {
- compatible = "fsl,imx31-rnga";
- reg = <0x53fb0000 0x4000>;
- interrupts = <22>;
- clocks = <&clks 29>;
- };
-
- gpio1: gpio at 53fcc000 {
- compatible = "fsl,imx31-gpio";
- reg = <0x53fcc000 0x4000>;
- interrupts = <52>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- gpio2: gpio at 53fd0000 {
- compatible = "fsl,imx31-gpio";
- reg = <0x53fd0000 0x4000>;
- interrupts = <51>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- sdma: dma-controller at 53fd4000 {
- compatible = "fsl,imx31-sdma";
- reg = <0x53fd4000 0x4000>;
- interrupts = <34>;
- clocks = <&clks 10>, <&clks 27>;
- clock-names = "ipg", "ahb";
- #dma-cells = <3>;
- fsl,sdma-ram-script-name = "imx/sdma/sdma-imx31.bin";
- };
-
- rtc: rtc at 53fd8000 {
- compatible = "fsl,imx31-rtc", "fsl,imx21-rtc";
- reg = <0x53fd8000 0x4000>;
- interrupts = <25>;
- clocks = <&clks 2>, <&clks 40>;
- clock-names = "ref", "ipg";
- };
-
- wdog: watchdog at 53fdc000 {
- compatible = "fsl,imx31-wdt", "fsl,imx21-wdt";
- reg = <0x53fdc000 0x4000>;
- clocks = <&clks 41>;
- interrupts = <55>;
- };
-
- pwm: pwm at 53fe0000 {
- compatible = "fsl,imx31-pwm", "fsl,imx27-pwm";
- reg = <0x53fe0000 0x4000>;
- interrupts = <26>;
- clocks = <&clks 10>, <&clks 42>;
- clock-names = "ipg", "per";
- #pwm-cells = <3>;
- status = "disabled";
- };
- };
-
- emi-bus at b8000000 { /* External Memory Interface */
- compatible = "simple-bus";
- reg = <0xb8000000 0x5000>;
- ranges;
- #address-cells = <1>;
- #size-cells = <1>;
-
- nfc: nand-controller at b8000000 {
- compatible = "fsl,imx31-nand", "fsl,imx27-nand";
- reg = <0xb8000000 0x1000>;
- interrupts = <33>;
- clocks = <&clks 9>;
- dmas = <&sdma 30 17 0>;
- dma-names = "rx-tx";
- #address-cells = <1>;
- #size-cells = <1>;
- status = "disabled";
- };
-
- weim: memory-controller at b8002000 {
- compatible = "fsl,imx31-weim", "fsl,imx27-weim";
- reg = <0xb8002000 0x1000>;
- clocks = <&clks 56>;
- #address-cells = <2>;
- #size-cells = <1>;
- ranges = <0 0 0xa0000000 0x08000000
- 1 0 0xa8000000 0x08000000
- 2 0 0xb0000000 0x02000000
- 3 0 0xb2000000 0x02000000
- 4 0 0xb4000000 0x02000000
- 5 0 0xb6000000 0x02000000>;
- status = "disabled";
- };
- };
- };
-};
diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index ed588add8d31..6ac42c06c1e9 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -15,7 +15,6 @@ CONFIG_PERF_EVENTS=y
CONFIG_KEXEC=y
CONFIG_ARCH_MULTI_V6=y
CONFIG_ARCH_MXC=y
-CONFIG_SOC_IMX31=y
CONFIG_SOC_IMX35=y
CONFIG_SOC_IMX50=y
CONFIG_SOC_IMX51=y
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 3f0521c652cb..77704c6a70ba 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -39,17 +39,6 @@ if ARCH_MULTI_V6
comment "ARM1136 platforms"
-config SOC_IMX31
- bool "i.MX31 support (DEPRECATED)"
- depends on !SMP
- select CPU_ARM1136R0
- select MXC_AVIC
- help
- This enables support for Freescale i.MX31 processor
-
- This SoC is scheduled for removal in early 2027,
- since it uses the ARM1136r0 CPU revision.
-
config SOC_IMX35
bool "i.MX35 support"
select CPU_ARM1136R1
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 5c650bf40e02..fa0144f0882d 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -5,7 +5,6 @@ obj-$(CONFIG_SOC_IMX25) += cpu-imx25.o mach-imx25.o pm-imx25.o
obj-$(CONFIG_SOC_IMX27) += cpu-imx27.o pm-imx27.o mach-imx27.o
-obj-$(CONFIG_SOC_IMX31) += mm-imx3.o cpu-imx31.o mach-imx31.o
obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o mach-imx35.o
imx5-pm-$(CONFIG_PM) += pm-imx5.o
diff --git a/arch/arm/mach-imx/cpu-imx31.c b/arch/arm/mach-imx/cpu-imx31.c
deleted file mode 100644
index e81ef9e36a1f..000000000000
--- a/arch/arm/mach-imx/cpu-imx31.c
+++ /dev/null
@@ -1,72 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * MX31 CPU type detection
- *
- * Copyright (c) 2009 Daniel Mack <daniel at caiaq.de>
- */
-
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/io.h>
-
-#include "common.h"
-#include "hardware.h"
-#include "iim.h"
-
-static int mx31_cpu_rev = -1;
-
-static struct {
- u8 srev;
- const char *name;
- unsigned int rev;
-} mx31_cpu_type[] = {
- { .srev = 0x00, .name = "i.MX31(L)", .rev = IMX_CHIP_REVISION_1_0 },
- { .srev = 0x10, .name = "i.MX31", .rev = IMX_CHIP_REVISION_1_1 },
- { .srev = 0x11, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_1_1 },
- { .srev = 0x12, .name = "i.MX31", .rev = IMX_CHIP_REVISION_1_1 },
- { .srev = 0x13, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_1_1 },
- { .srev = 0x14, .name = "i.MX31", .rev = IMX_CHIP_REVISION_1_2 },
- { .srev = 0x15, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_1_2 },
- { .srev = 0x28, .name = "i.MX31", .rev = IMX_CHIP_REVISION_2_0 },
- { .srev = 0x29, .name = "i.MX31L", .rev = IMX_CHIP_REVISION_2_0 },
-};
-
-static int mx31_read_cpu_rev(void)
-{
- void __iomem *iim_base;
- struct device_node *np;
- u32 i, srev;
- int rev = IMX_CHIP_REVISION_UNKNOWN;
-
- np = of_find_compatible_node(NULL, NULL, "fsl,imx31-iim");
- iim_base = of_iomap(np, 0);
- of_node_put(np);
- BUG_ON(!iim_base);
-
- /* read SREV register from IIM module */
- srev = imx_readl(iim_base + MXC_IIMSREV);
- srev &= 0xff;
-
- for (i = 0; i < ARRAY_SIZE(mx31_cpu_type); i++)
- if (srev == mx31_cpu_type[i].srev) {
- rev = mx31_cpu_type[i].rev;
- imx_print_silicon_rev(mx31_cpu_type[i].name,
- mx31_cpu_type[i].rev);
- goto out;
- }
-
- imx_print_silicon_rev("i.MX31", IMX_CHIP_REVISION_UNKNOWN);
-
-out:
- iounmap(iim_base);
- return rev;
-}
-
-int mx31_revision(void)
-{
- if (mx31_cpu_rev == -1)
- mx31_cpu_rev = mx31_read_cpu_rev();
-
- return mx31_cpu_rev;
-}
-EXPORT_SYMBOL(mx31_revision);
diff --git a/arch/arm/mach-imx/mach-imx31.c b/arch/arm/mach-imx/mach-imx31.c
deleted file mode 100644
index e9a1092b6093..000000000000
--- a/arch/arm/mach-imx/mach-imx31.c
+++ /dev/null
@@ -1,18 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright 2012 Sascha Hauer, Pengutronix
- */
-
-#include <asm/mach/arch.h>
-#include "common.h"
-
-static const char * const imx31_dt_board_compat[] __initconst = {
- "fsl,imx31",
- NULL
-};
-
-DT_MACHINE_START(IMX31_DT, "Freescale i.MX31 (Device Tree Support)")
- .map_io = mx31_map_io,
- .init_early = imx31_init_early,
- .dt_compat = imx31_dt_board_compat,
-MACHINE_END
diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c
index 9b0b014d7fe2..42e73518004a 100644
--- a/arch/arm/mach-imx/mm-imx3.c
+++ b/arch/arm/mach-imx/mm-imx3.c
@@ -69,49 +69,6 @@ static void __iomem *imx3_ioremap_caller(phys_addr_t phys_addr, size_t size,
return __arm_ioremap_caller(phys_addr, size, mtype, caller);
}
-#ifdef CONFIG_SOC_IMX31
-static struct map_desc mx31_io_desc[] __initdata = {
- imx_map_entry(MX31, X_MEMC, MT_DEVICE),
- imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
- imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
- imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
- imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
-};
-
-/*
- * This function initializes the memory map. It is called during the
- * system startup to create static physical to virtual memory mappings
- * for the IO modules.
- */
-void __init mx31_map_io(void)
-{
- iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
-}
-
-static void imx31_idle(void)
-{
- int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
- reg &= ~MXC_CCM_CCMR_LPM_MASK;
- imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
-
- imx3_idle();
-}
-
-void __init imx31_init_early(void)
-{
- struct device_node *np;
-
- mxc_set_cpu_type(MXC_CPU_MX31);
- arch_ioremap_caller = imx3_ioremap_caller;
- arm_pm_idle = imx31_idle;
- np = of_find_compatible_node(NULL, NULL, "fsl,imx31-ccm");
- mx3_ccm_base = of_iomap(np, 0);
- of_node_put(np);
- BUG_ON(!mx3_ccm_base);
-}
-#endif /* ifdef CONFIG_SOC_IMX31 */
-
-#ifdef CONFIG_SOC_IMX35
static struct map_desc mx35_io_desc[] __initdata = {
imx_map_entry(MX35, X_MEMC, MT_DEVICE),
imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
@@ -147,4 +104,3 @@ void __init imx35_init_early(void)
of_node_put(np);
BUG_ON(!mx3_ccm_base);
}
-#endif /* ifdef CONFIG_SOC_IMX35 */
--
2.53.0
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