[PATCH v2 0/2] arm/mach-imx: add big-endian support

[PATCH v2 0/2] arm/mach-imx: add big-endian support

[Johannes Berg]

These patches add big-endian support for i.MX6, tested on a HummingBoard.

The FEC driver needed adjustements that have already been merged into davem's
net.git, and on 4.5-rc1 regmap is currently broken but Mark Brown is working
on fixing it (or reverting the patch.)

I also compile-tested all the files the patches touch.

johannes

[PATCH v2 1/2] arm/mach-imx: use endian-safe readl/readw/writel/writew

[Johannes Berg]

Instead of __raw_*, define imx_* to *_relaxed and use those.

Using imx_* was requested by Arnd because *_relaxed tends to
indicate that the code was carefully reviewed to not require
any synchronisation and otherwise be safe, which isn't the
case here with the automatic conversion.

The conversion itself was done using the following spatch
(since that automatically adjusts the coding style unlike
a simple search&replace).

@@
expression E1, E2;
@@
-__raw_writel(E1, E2)
+imx_writel(E1, E2)
@@
expression E1, E2;
@@
-__raw_writew(E1, E2)
+imx_writew(E1, E2)
@@
expression E1;
@@
-__raw_readl(E1)
+imx_readl(E1)
@@
expression E1;
@@
-__raw_readw(E1)
+imx_readw(E1)

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
---
 arch/arm/mach-imx/3ds_debugboard.c    | 30 +++++++++++++++---------------
 arch/arm/mach-imx/avic.c              | 30 +++++++++++++++---------------
 arch/arm/mach-imx/cpu-imx27.c         |  3 +--
 arch/arm/mach-imx/cpu-imx31.c         |  2 +-
 arch/arm/mach-imx/cpu-imx35.c         |  2 +-
 arch/arm/mach-imx/cpu.c               | 16 ++++++++--------
 arch/arm/mach-imx/epit.c              | 22 +++++++++++-----------
 arch/arm/mach-imx/iomux-imx31.c       | 12 ++++++------
 arch/arm/mach-imx/iomux-v1.c          |  4 ++--
 arch/arm/mach-imx/iomux-v3.c          |  6 +++---
 arch/arm/mach-imx/mach-armadillo5x0.c |  4 ++--
 arch/arm/mach-imx/mach-imx51.c        |  5 ++---
 arch/arm/mach-imx/mach-mx27ads.c      |  6 +++---
 arch/arm/mach-imx/mach-mx31ads.c      | 16 ++++++++--------
 arch/arm/mach-imx/mach-mx31moboard.c  |  2 +-
 arch/arm/mach-imx/mach-qong.c         |  6 +++---
 arch/arm/mach-imx/mxc.h               |  5 +++++
 arch/arm/mach-imx/pm-imx27.c          |  4 ++--
 arch/arm/mach-imx/pm-imx3.c           |  4 ++--
 arch/arm/mach-imx/pm-imx5.c           | 26 +++++++++++++-------------
 arch/arm/mach-imx/system.c            |  6 +++---
 arch/arm/mach-imx/tzic.c              | 34 +++++++++++++++++-----------------
 22 files changed, 124 insertions(+), 121 deletions(-)

diff --git a/arch/arm/mach-imx/3ds_debugboard.c b/arch/arm/mach-imx/3ds_debugboard.c
index 16496a071ecb..cda330c93d61 100644
--- a/arch/arm/mach-imx/3ds_debugboard.c
+++ b/arch/arm/mach-imx/3ds_debugboard.c
@@ -94,8 +94,8 @@ static void mxc_expio_irq_handler(struct irq_desc *desc)
 	/* irq = gpio irq number */
 	desc->irq_data.chip->irq_mask(&desc->irq_data);
 
-	imr_val = __raw_readw(brd_io + INTR_MASK_REG);
-	int_valid = __raw_readw(brd_io + INTR_STATUS_REG) & ~imr_val;
+	imr_val = imx_readw(brd_io + INTR_MASK_REG);
+	int_valid = imx_readw(brd_io + INTR_STATUS_REG) & ~imr_val;
 
 	expio_irq = 0;
 	for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
@@ -117,17 +117,17 @@ static void expio_mask_irq(struct irq_data *d)
 	u16 reg;
 	u32 expio = d->hwirq;
 
-	reg = __raw_readw(brd_io + INTR_MASK_REG);
+	reg = imx_readw(brd_io + INTR_MASK_REG);
 	reg |= (1 << expio);
-	__raw_writew(reg, brd_io + INTR_MASK_REG);
+	imx_writew(reg, brd_io + INTR_MASK_REG);
 }
 
 static void expio_ack_irq(struct irq_data *d)
 {
 	u32 expio = d->hwirq;
 
-	__raw_writew(1 << expio, brd_io + INTR_RESET_REG);
-	__raw_writew(0, brd_io + INTR_RESET_REG);
+	imx_writew(1 << expio, brd_io + INTR_RESET_REG);
+	imx_writew(0, brd_io + INTR_RESET_REG);
 	expio_mask_irq(d);
 }
 
@@ -136,9 +136,9 @@ static void expio_unmask_irq(struct irq_data *d)
 	u16 reg;
 	u32 expio = d->hwirq;
 
-	reg = __raw_readw(brd_io + INTR_MASK_REG);
+	reg = imx_readw(brd_io + INTR_MASK_REG);
 	reg &= ~(1 << expio);
-	__raw_writew(reg, brd_io + INTR_MASK_REG);
+	imx_writew(reg, brd_io + INTR_MASK_REG);
 }
 
 static struct irq_chip expio_irq_chip = {
@@ -162,9 +162,9 @@ int __init mxc_expio_init(u32 base, u32 intr_gpio)
 	if (brd_io == NULL)
 		return -ENOMEM;
 
-	if ((__raw_readw(brd_io + MAGIC_NUMBER1_REG) != 0xAAAA) ||
-	    (__raw_readw(brd_io + MAGIC_NUMBER2_REG) != 0x5555) ||
-	    (__raw_readw(brd_io + MAGIC_NUMBER3_REG) != 0xCAFE)) {
+	if ((imx_readw(brd_io + MAGIC_NUMBER1_REG) != 0xAAAA) ||
+	    (imx_readw(brd_io + MAGIC_NUMBER2_REG) != 0x5555) ||
+	    (imx_readw(brd_io + MAGIC_NUMBER3_REG) != 0xCAFE)) {
 		pr_info("3-Stack Debug board not detected\n");
 		iounmap(brd_io);
 		brd_io = NULL;
@@ -181,10 +181,10 @@ int __init mxc_expio_init(u32 base, u32 intr_gpio)
 	gpio_direction_input(intr_gpio);
 
 	/* disable the interrupt and clear the status */
-	__raw_writew(0, brd_io + INTR_MASK_REG);
-	__raw_writew(0xFFFF, brd_io + INTR_RESET_REG);
-	__raw_writew(0, brd_io + INTR_RESET_REG);
-	__raw_writew(0x1F, brd_io + INTR_MASK_REG);
+	imx_writew(0, brd_io + INTR_MASK_REG);
+	imx_writew(0xFFFF, brd_io + INTR_RESET_REG);
+	imx_writew(0, brd_io + INTR_RESET_REG);
+	imx_writew(0x1F, brd_io + INTR_MASK_REG);
 
 	irq_base = irq_alloc_descs(-1, 0, MXC_MAX_EXP_IO_LINES, numa_node_id());
 	WARN_ON(irq_base < 0);
diff --git a/arch/arm/mach-imx/avic.c b/arch/arm/mach-imx/avic.c
index 1a8932335b21..7fa176e792bd 100644
--- a/arch/arm/mach-imx/avic.c
+++ b/arch/arm/mach-imx/avic.c
@@ -66,12 +66,12 @@ static int avic_set_irq_fiq(unsigned int irq, unsigned int type)
 		return -EINVAL;
 
 	if (irq < AVIC_NUM_IRQS / 2) {
-		irqt = __raw_readl(avic_base + AVIC_INTTYPEL) & ~(1 << irq);
-		__raw_writel(irqt | (!!type << irq), avic_base + AVIC_INTTYPEL);
+		irqt = imx_readl(avic_base + AVIC_INTTYPEL) & ~(1 << irq);
+		imx_writel(irqt | (!!type << irq), avic_base + AVIC_INTTYPEL);
 	} else {
 		irq -= AVIC_NUM_IRQS / 2;
-		irqt = __raw_readl(avic_base + AVIC_INTTYPEH) & ~(1 << irq);
-		__raw_writel(irqt | (!!type << irq), avic_base + AVIC_INTTYPEH);
+		irqt = imx_readl(avic_base + AVIC_INTTYPEH) & ~(1 << irq);
+		imx_writel(irqt | (!!type << irq), avic_base + AVIC_INTTYPEH);
 	}
 
 	return 0;
@@ -94,8 +94,8 @@ static void avic_irq_suspend(struct irq_data *d)
 	struct irq_chip_type *ct = gc->chip_types;
 	int idx = d->hwirq >> 5;
 
-	avic_saved_mask_reg[idx] = __raw_readl(avic_base + ct->regs.mask);
-	__raw_writel(gc->wake_active, avic_base + ct->regs.mask);
+	avic_saved_mask_reg[idx] = imx_readl(avic_base + ct->regs.mask);
+	imx_writel(gc->wake_active, avic_base + ct->regs.mask);
 }
 
 static void avic_irq_resume(struct irq_data *d)
@@ -104,7 +104,7 @@ static void avic_irq_resume(struct irq_data *d)
 	struct irq_chip_type *ct = gc->chip_types;
 	int idx = d->hwirq >> 5;
 
-	__raw_writel(avic_saved_mask_reg[idx], avic_base + ct->regs.mask);
+	imx_writel(avic_saved_mask_reg[idx], avic_base + ct->regs.mask);
 }
 
 #else
@@ -140,7 +140,7 @@ static void __exception_irq_entry avic_handle_irq(struct pt_regs *regs)
 	u32 nivector;
 
 	do {
-		nivector = __raw_readl(avic_base + AVIC_NIVECSR) >> 16;
+		nivector = imx_readl(avic_base + AVIC_NIVECSR) >> 16;
 		if (nivector == 0xffff)
 			break;
 
@@ -164,16 +164,16 @@ void __init mxc_init_irq(void __iomem *irqbase)
 	/* put the AVIC into the reset value with
 	 * all interrupts disabled
 	 */
-	__raw_writel(0, avic_base + AVIC_INTCNTL);
-	__raw_writel(0x1f, avic_base + AVIC_NIMASK);
+	imx_writel(0, avic_base + AVIC_INTCNTL);
+	imx_writel(0x1f, avic_base + AVIC_NIMASK);
 
 	/* disable all interrupts */
-	__raw_writel(0, avic_base + AVIC_INTENABLEH);
-	__raw_writel(0, avic_base + AVIC_INTENABLEL);
+	imx_writel(0, avic_base + AVIC_INTENABLEH);
+	imx_writel(0, avic_base + AVIC_INTENABLEL);
 
 	/* all IRQ no FIQ */
-	__raw_writel(0, avic_base + AVIC_INTTYPEH);
-	__raw_writel(0, avic_base + AVIC_INTTYPEL);
+	imx_writel(0, avic_base + AVIC_INTTYPEH);
+	imx_writel(0, avic_base + AVIC_INTTYPEL);
 
 	irq_base = irq_alloc_descs(-1, 0, AVIC_NUM_IRQS, numa_node_id());
 	WARN_ON(irq_base < 0);
@@ -188,7 +188,7 @@ void __init mxc_init_irq(void __iomem *irqbase)
 
 	/* Set default priority value (0) for all IRQ's */
 	for (i = 0; i < 8; i++)
-		__raw_writel(0, avic_base + AVIC_NIPRIORITY(i));
+		imx_writel(0, avic_base + AVIC_NIPRIORITY(i));
 
 	set_handle_irq(avic_handle_irq);
 
diff --git a/arch/arm/mach-imx/cpu-imx27.c b/arch/arm/mach-imx/cpu-imx27.c
index fe8d36f7e30e..8d2ae4091465 100644
--- a/arch/arm/mach-imx/cpu-imx27.c
+++ b/arch/arm/mach-imx/cpu-imx27.c
@@ -39,8 +39,7 @@ static int mx27_read_cpu_rev(void)
 	 * the silicon revision very early we read it here to
 	 * avoid any further hooks
 	*/
-	val = __raw_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR
-				+ SYS_CHIP_ID));
+	val = imx_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR + SYS_CHIP_ID));
 
 	mx27_cpu_partnumber = (int)((val >> 12) & 0xFFFF);
 
diff --git a/arch/arm/mach-imx/cpu-imx31.c b/arch/arm/mach-imx/cpu-imx31.c
index fde1860a2521..3daf1959a2f0 100644
--- a/arch/arm/mach-imx/cpu-imx31.c
+++ b/arch/arm/mach-imx/cpu-imx31.c
@@ -39,7 +39,7 @@ static int mx31_read_cpu_rev(void)
 	u32 i, srev;
 
 	/* read SREV register from IIM module */
-	srev = __raw_readl(MX31_IO_ADDRESS(MX31_IIM_BASE_ADDR + MXC_IIMSREV));
+	srev = imx_readl(MX31_IO_ADDRESS(MX31_IIM_BASE_ADDR + MXC_IIMSREV));
 	srev &= 0xff;
 
 	for (i = 0; i < ARRAY_SIZE(mx31_cpu_type); i++)
diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c
index ec3aaa098c17..8a54234df23b 100644
--- a/arch/arm/mach-imx/cpu-imx35.c
+++ b/arch/arm/mach-imx/cpu-imx35.c
@@ -20,7 +20,7 @@ static int mx35_read_cpu_rev(void)
 {
 	u32 rev;
 
-	rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV));
+	rev = imx_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV));
 	switch (rev) {
 	case 0x00:
 		return IMX_CHIP_REVISION_1_0;
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
index 5b0f752d5507..6a96b7cf468f 100644
--- a/arch/arm/mach-imx/cpu.c
+++ b/arch/arm/mach-imx/cpu.c
@@ -45,20 +45,20 @@ void __init imx_set_aips(void __iomem *base)
  * Set all MPROTx to be non-bufferable, trusted for R/W,
  * not forced to user-mode.
  */
-	__raw_writel(0x77777777, base + 0x0);
-	__raw_writel(0x77777777, base + 0x4);
+	imx_writel(0x77777777, base + 0x0);
+	imx_writel(0x77777777, base + 0x4);
 
 /*
  * Set all OPACRx to be non-bufferable, to not require
  * supervisor privilege level for access, allow for
  * write access and untrusted master access.
  */
-	__raw_writel(0x0, base + 0x40);
-	__raw_writel(0x0, base + 0x44);
-	__raw_writel(0x0, base + 0x48);
-	__raw_writel(0x0, base + 0x4C);
-	reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
-	__raw_writel(reg, base + 0x50);
+	imx_writel(0x0, base + 0x40);
+	imx_writel(0x0, base + 0x44);
+	imx_writel(0x0, base + 0x48);
+	imx_writel(0x0, base + 0x4C);
+	reg = imx_readl(base + 0x50) & 0x00FFFFFF;
+	imx_writel(reg, base + 0x50);
 }
 
 void __init imx_aips_allow_unprivileged_access(
diff --git a/arch/arm/mach-imx/epit.c b/arch/arm/mach-imx/epit.c
index 08ce20771bb3..fb9a73a57d00 100644
--- a/arch/arm/mach-imx/epit.c
+++ b/arch/arm/mach-imx/epit.c
@@ -64,23 +64,23 @@ static inline void epit_irq_disable(void)
 {
 	u32 val;
 
-	val = __raw_readl(timer_base + EPITCR);
+	val = imx_readl(timer_base + EPITCR);
 	val &= ~EPITCR_OCIEN;
-	__raw_writel(val, timer_base + EPITCR);
+	imx_writel(val, timer_base + EPITCR);
 }
 
 static inline void epit_irq_enable(void)
 {
 	u32 val;
 
-	val = __raw_readl(timer_base + EPITCR);
+	val = imx_readl(timer_base + EPITCR);
 	val |= EPITCR_OCIEN;
-	__raw_writel(val, timer_base + EPITCR);
+	imx_writel(val, timer_base + EPITCR);
 }
 
 static void epit_irq_acknowledge(void)
 {
-	__raw_writel(EPITSR_OCIF, timer_base + EPITSR);
+	imx_writel(EPITSR_OCIF, timer_base + EPITSR);
 }
 
 static int __init epit_clocksource_init(struct clk *timer_clk)
@@ -98,9 +98,9 @@ static int epit_set_next_event(unsigned long evt,
 {
 	unsigned long tcmp;
 
-	tcmp = __raw_readl(timer_base + EPITCNR);
+	tcmp = imx_readl(timer_base + EPITCNR);
 
-	__raw_writel(tcmp - evt, timer_base + EPITCMPR);
+	imx_writel(tcmp - evt, timer_base + EPITCMPR);
 
 	return 0;
 }
@@ -213,11 +213,11 @@ void __init epit_timer_init(void __iomem *base, int irq)
 	/*
 	 * Initialise to a known state (all timers off, and timing reset)
 	 */
-	__raw_writel(0x0, timer_base + EPITCR);
+	imx_writel(0x0, timer_base + EPITCR);
 
-	__raw_writel(0xffffffff, timer_base + EPITLR);
-	__raw_writel(EPITCR_EN | EPITCR_CLKSRC_REF_HIGH | EPITCR_WAITEN,
-			timer_base + EPITCR);
+	imx_writel(0xffffffff, timer_base + EPITLR);
+	imx_writel(EPITCR_EN | EPITCR_CLKSRC_REF_HIGH | EPITCR_WAITEN,
+		   timer_base + EPITCR);
 
 	/* init and register the timer to the framework */
 	epit_clocksource_init(timer_clk);
diff --git a/arch/arm/mach-imx/iomux-imx31.c b/arch/arm/mach-imx/iomux-imx31.c
index 0b5ba4bf572a..3982e91b2f3e 100644
--- a/arch/arm/mach-imx/iomux-imx31.c
+++ b/arch/arm/mach-imx/iomux-imx31.c
@@ -57,10 +57,10 @@ void mxc_iomux_mode(unsigned int pin_mode)
 
 	spin_lock(&gpio_mux_lock);
 
-	l = __raw_readl(reg);
+	l = imx_readl(reg);
 	l &= ~(0xff << (field * 8));
 	l |= mode << (field * 8);
-	__raw_writel(l, reg);
+	imx_writel(l, reg);
 
 	spin_unlock(&gpio_mux_lock);
 }
@@ -82,10 +82,10 @@ void mxc_iomux_set_pad(enum iomux_pins pin, u32 config)
 
 	spin_lock(&gpio_mux_lock);
 
-	l = __raw_readl(reg);
+	l = imx_readl(reg);
 	l &= ~(0x1ff << (field * 10));
 	l |= config << (field * 10);
-	__raw_writel(l, reg);
+	imx_writel(l, reg);
 
 	spin_unlock(&gpio_mux_lock);
 }
@@ -163,12 +163,12 @@ void mxc_iomux_set_gpr(enum iomux_gp_func gp, bool en)
 	u32 l;
 
 	spin_lock(&gpio_mux_lock);
-	l = __raw_readl(IOMUXGPR);
+	l = imx_readl(IOMUXGPR);
 	if (en)
 		l |= gp;
 	else
 		l &= ~gp;
 
-	__raw_writel(l, IOMUXGPR);
+	imx_writel(l, IOMUXGPR);
 	spin_unlock(&gpio_mux_lock);
 }
diff --git a/arch/arm/mach-imx/iomux-v1.c b/arch/arm/mach-imx/iomux-v1.c
index ecd543664644..7aa90c863ad9 100644
--- a/arch/arm/mach-imx/iomux-v1.c
+++ b/arch/arm/mach-imx/iomux-v1.c
@@ -38,12 +38,12 @@ static unsigned imx_iomuxv1_numports;
 
 static inline unsigned long imx_iomuxv1_readl(unsigned offset)
 {
-	return __raw_readl(imx_iomuxv1_baseaddr + offset);
+	return imx_readl(imx_iomuxv1_baseaddr + offset);
 }
 
 static inline void imx_iomuxv1_writel(unsigned long val, unsigned offset)
 {
-	__raw_writel(val, imx_iomuxv1_baseaddr + offset);
+	imx_writel(val, imx_iomuxv1_baseaddr + offset);
 }
 
 static inline void imx_iomuxv1_rmwl(unsigned offset,
diff --git a/arch/arm/mach-imx/iomux-v3.c b/arch/arm/mach-imx/iomux-v3.c
index a53b2e64f98d..ca59d5f2ec92 100644
--- a/arch/arm/mach-imx/iomux-v3.c
+++ b/arch/arm/mach-imx/iomux-v3.c
@@ -45,13 +45,13 @@ int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
 	u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
 
 	if (mux_ctrl_ofs)
-		__raw_writel(mux_mode, base + mux_ctrl_ofs);
+		imx_writel(mux_mode, base + mux_ctrl_ofs);
 
 	if (sel_input_ofs)
-		__raw_writel(sel_input, base + sel_input_ofs);
+		imx_writel(sel_input, base + sel_input_ofs);
 
 	if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
-		__raw_writel(pad_ctrl, base + pad_ctrl_ofs);
+		imx_writel(pad_ctrl, base + pad_ctrl_ofs);
 
 	return 0;
 }
diff --git a/arch/arm/mach-imx/mach-armadillo5x0.c b/arch/arm/mach-imx/mach-armadillo5x0.c
index f2060523ba48..eaee47a2fcc0 100644
--- a/arch/arm/mach-imx/mach-armadillo5x0.c
+++ b/arch/arm/mach-imx/mach-armadillo5x0.c
@@ -525,8 +525,8 @@ static void __init armadillo5x0_init(void)
 	imx31_add_mxc_nand(&armadillo5x0_nand_board_info);
 
 	/* set NAND page size to 2k if not configured via boot mode pins */
-	__raw_writel(__raw_readl(mx3_ccm_base + MXC_CCM_RCSR) |
-					(1 << 30), mx3_ccm_base + MXC_CCM_RCSR);
+	imx_writel(imx_readl(mx3_ccm_base + MXC_CCM_RCSR) | (1 << 30),
+		   mx3_ccm_base + MXC_CCM_RCSR);
 
 	/* RTC */
 	/* Get RTC IRQ and register the chip */
diff --git a/arch/arm/mach-imx/mach-imx51.c b/arch/arm/mach-imx/mach-imx51.c
index b015129e4045..6883fbaf9484 100644
--- a/arch/arm/mach-imx/mach-imx51.c
+++ b/arch/arm/mach-imx/mach-imx51.c
@@ -40,11 +40,10 @@ static void __init imx51_ipu_mipi_setup(void)
 	WARN_ON(!hsc_addr);
 
 	/* setup MIPI module to legacy mode */
-	__raw_writel(0xf00, hsc_addr);
+	imx_writel(0xf00, hsc_addr);
 
 	/* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
-	__raw_writel(__raw_readl(hsc_addr + 0x800) | 0x30ff,
-		hsc_addr + 0x800);
+	imx_writel(imx_readl(hsc_addr + 0x800) | 0x30ff, hsc_addr + 0x800);
 
 	iounmap(hsc_addr);
 }
diff --git a/arch/arm/mach-imx/mach-mx27ads.c b/arch/arm/mach-imx/mach-mx27ads.c
index eb1c3477c48a..267fad23b225 100644
--- a/arch/arm/mach-imx/mach-mx27ads.c
+++ b/arch/arm/mach-imx/mach-mx27ads.c
@@ -202,9 +202,9 @@ static struct i2c_board_info mx27ads_i2c_devices[] = {
 static void vgpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
 	if (value)
-		__raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
+		imx_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
 	else
-		__raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
+		imx_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
 }
 
 static int vgpio_dir_out(struct gpio_chip *chip, unsigned offset, int value)
@@ -364,7 +364,7 @@ static void __init mx27ads_timer_init(void)
 {
 	unsigned long fref = 26000000;
 
-	if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
+	if ((imx_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
 		fref = 27000000;
 
 	mx27_clocks_init(fref);
diff --git a/arch/arm/mach-imx/mach-mx31ads.c b/arch/arm/mach-imx/mach-mx31ads.c
index 2b147e4bf9c9..4f2c56d44ba1 100644
--- a/arch/arm/mach-imx/mach-mx31ads.c
+++ b/arch/arm/mach-imx/mach-mx31ads.c
@@ -160,8 +160,8 @@ static void mx31ads_expio_irq_handler(struct irq_desc *desc)
 	u32 int_valid;
 	u32 expio_irq;
 
-	imr_val = __raw_readw(PBC_INTMASK_SET_REG);
-	int_valid = __raw_readw(PBC_INTSTATUS_REG) & imr_val;
+	imr_val = imx_readw(PBC_INTMASK_SET_REG);
+	int_valid = imx_readw(PBC_INTSTATUS_REG) & imr_val;
 
 	expio_irq = 0;
 	for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
@@ -180,8 +180,8 @@ static void expio_mask_irq(struct irq_data *d)
 {
 	u32 expio = d->hwirq;
 	/* mask the interrupt */
-	__raw_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
-	__raw_readw(PBC_INTMASK_CLEAR_REG);
+	imx_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
+	imx_readw(PBC_INTMASK_CLEAR_REG);
 }
 
 /*
@@ -192,7 +192,7 @@ static void expio_ack_irq(struct irq_data *d)
 {
 	u32 expio = d->hwirq;
 	/* clear the interrupt status */
-	__raw_writew(1 << expio, PBC_INTSTATUS_REG);
+	imx_writew(1 << expio, PBC_INTSTATUS_REG);
 }
 
 /*
@@ -203,7 +203,7 @@ static void expio_unmask_irq(struct irq_data *d)
 {
 	u32 expio = d->hwirq;
 	/* unmask the interrupt */
-	__raw_writew(1 << expio, PBC_INTMASK_SET_REG);
+	imx_writew(1 << expio, PBC_INTMASK_SET_REG);
 }
 
 static struct irq_chip expio_irq_chip = {
@@ -226,8 +226,8 @@ static void __init mx31ads_init_expio(void)
 	mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_GPIO1_4, IOMUX_CONFIG_GPIO), "expio");
 
 	/* disable the interrupt and clear the status */
-	__raw_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
-	__raw_writew(0xFFFF, PBC_INTSTATUS_REG);
+	imx_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
+	imx_writew(0xFFFF, PBC_INTSTATUS_REG);
 
 	irq_base = irq_alloc_descs(-1, 0, MXC_MAX_EXP_IO_LINES, numa_node_id());
 	WARN_ON(irq_base < 0);
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index bb6f8a52a6b8..4f2d99888afd 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c
@@ -509,7 +509,7 @@ static void mx31moboard_poweroff(void)
 
 	mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST);
 
-	__raw_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
+	imx_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
 }
 
 static int mx31moboard_baseboard;
diff --git a/arch/arm/mach-imx/mach-qong.c b/arch/arm/mach-imx/mach-qong.c
index 5c2764604727..34df64f133ed 100644
--- a/arch/arm/mach-imx/mach-qong.c
+++ b/arch/arm/mach-imx/mach-qong.c
@@ -190,9 +190,9 @@ static struct platform_device qong_nand_device = {
 static void __init qong_init_nand_mtd(void)
 {
 	/* init CS */
-	__raw_writel(0x00004f00, MX31_IO_ADDRESS(MX31_WEIM_CSCRxU(3)));
-	__raw_writel(0x20013b31, MX31_IO_ADDRESS(MX31_WEIM_CSCRxL(3)));
-	__raw_writel(0x00020800, MX31_IO_ADDRESS(MX31_WEIM_CSCRxA(3)));
+	imx_writel(0x00004f00, MX31_IO_ADDRESS(MX31_WEIM_CSCRxU(3)));
+	imx_writel(0x20013b31, MX31_IO_ADDRESS(MX31_WEIM_CSCRxL(3)));
+	imx_writel(0x00020800, MX31_IO_ADDRESS(MX31_WEIM_CSCRxA(3)));
 
 	mxc_iomux_set_gpr(MUX_SDCTL_CSD1_SEL, true);
 
diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h
index a5b1af6d7441..d32704256781 100644
--- a/arch/arm/mach-imx/mxc.h
+++ b/arch/arm/mach-imx/mxc.h
@@ -193,4 +193,9 @@ extern struct cpu_op *(*get_cpu_op)(int *op);
 #define cpu_is_mx3()	(cpu_is_mx31() || cpu_is_mx35())
 #define cpu_is_mx2()	(cpu_is_mx21() || cpu_is_mx27())
 
+#define imx_readl	readl_relaxed
+#define imx_readw	readw_relaxed
+#define imx_writel	writel_relaxed
+#define imx_writew	writew_relaxed
+
 #endif /*  __ASM_ARCH_MXC_H__ */
diff --git a/arch/arm/mach-imx/pm-imx27.c b/arch/arm/mach-imx/pm-imx27.c
index 56d02d064fbf..43096c8990d4 100644
--- a/arch/arm/mach-imx/pm-imx27.c
+++ b/arch/arm/mach-imx/pm-imx27.c
@@ -19,9 +19,9 @@ static int mx27_suspend_enter(suspend_state_t state)
 	switch (state) {
 	case PM_SUSPEND_MEM:
 		/* Clear MPEN and SPEN to disable MPLL/SPLL */
-		cscr = __raw_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
+		cscr = imx_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
 		cscr &= 0xFFFFFFFC;
-		__raw_writel(cscr, MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
+		imx_writel(cscr, MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
 		/* Executes WFI */
 		cpu_do_idle();
 		break;
diff --git a/arch/arm/mach-imx/pm-imx3.c b/arch/arm/mach-imx/pm-imx3.c
index 6a07006ff0f4..94c0898751d8 100644
--- a/arch/arm/mach-imx/pm-imx3.c
+++ b/arch/arm/mach-imx/pm-imx3.c
@@ -22,14 +22,14 @@
  */
 void mx3_cpu_lp_set(enum mx3_cpu_pwr_mode mode)
 {
-	int reg = __raw_readl(mx3_ccm_base + MXC_CCM_CCMR);
+	int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
 	reg &= ~MXC_CCM_CCMR_LPM_MASK;
 
 	switch (mode) {
 	case MX3_WAIT:
 		if (cpu_is_mx35())
 			reg |= MXC_CCM_CCMR_LPM_WAIT_MX35;
-		__raw_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
+		imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
 		break;
 	default:
 		pr_err("Unknown cpu power mode: %d\n", mode);
diff --git a/arch/arm/mach-imx/pm-imx5.c b/arch/arm/mach-imx/pm-imx5.c
index 532d4b08276d..868781fd460c 100644
--- a/arch/arm/mach-imx/pm-imx5.c
+++ b/arch/arm/mach-imx/pm-imx5.c
@@ -153,15 +153,15 @@ static void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode)
 	int stop_mode = 0;
 
 	/* always allow platform to issue a deep sleep mode request */
-	plat_lpc = __raw_readl(cortex_base + MXC_CORTEXA8_PLAT_LPC) &
+	plat_lpc = imx_readl(cortex_base + MXC_CORTEXA8_PLAT_LPC) &
 	    ~(MXC_CORTEXA8_PLAT_LPC_DSM);
-	ccm_clpcr = __raw_readl(ccm_base + MXC_CCM_CLPCR) &
+	ccm_clpcr = imx_readl(ccm_base + MXC_CCM_CLPCR) &
 		    ~(MXC_CCM_CLPCR_LPM_MASK);
-	arm_srpgcr = __raw_readl(gpc_base + MXC_SRPG_ARM_SRPGCR) &
+	arm_srpgcr = imx_readl(gpc_base + MXC_SRPG_ARM_SRPGCR) &
 		     ~(MXC_SRPGCR_PCR);
-	empgc0 = __raw_readl(gpc_base + MXC_SRPG_EMPGC0_SRPGCR) &
+	empgc0 = imx_readl(gpc_base + MXC_SRPG_EMPGC0_SRPGCR) &
 		 ~(MXC_SRPGCR_PCR);
-	empgc1 = __raw_readl(gpc_base + MXC_SRPG_EMPGC1_SRPGCR) &
+	empgc1 = imx_readl(gpc_base + MXC_SRPG_EMPGC1_SRPGCR) &
 		 ~(MXC_SRPGCR_PCR);
 
 	switch (mode) {
@@ -196,17 +196,17 @@ static void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode)
 		return;
 	}
 
-	__raw_writel(plat_lpc, cortex_base + MXC_CORTEXA8_PLAT_LPC);
-	__raw_writel(ccm_clpcr, ccm_base + MXC_CCM_CLPCR);
-	__raw_writel(arm_srpgcr, gpc_base + MXC_SRPG_ARM_SRPGCR);
-	__raw_writel(arm_srpgcr, gpc_base + MXC_SRPG_NEON_SRPGCR);
+	imx_writel(plat_lpc, cortex_base + MXC_CORTEXA8_PLAT_LPC);
+	imx_writel(ccm_clpcr, ccm_base + MXC_CCM_CLPCR);
+	imx_writel(arm_srpgcr, gpc_base + MXC_SRPG_ARM_SRPGCR);
+	imx_writel(arm_srpgcr, gpc_base + MXC_SRPG_NEON_SRPGCR);
 
 	if (stop_mode) {
 		empgc0 |= MXC_SRPGCR_PCR;
 		empgc1 |= MXC_SRPGCR_PCR;
 
-		__raw_writel(empgc0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
-		__raw_writel(empgc1, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
+		imx_writel(empgc0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
+		imx_writel(empgc1, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
 	}
 }
 
@@ -228,8 +228,8 @@ static int mx5_suspend_enter(suspend_state_t state)
 		flush_cache_all();
 
 		/*clear the EMPGC0/1 bits */
-		__raw_writel(0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
-		__raw_writel(0, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
+		imx_writel(0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
+		imx_writel(0, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
 
 		if (imx5_suspend_in_ocram_fn)
 			imx5_suspend_in_ocram_fn(suspend_ocram_base);
diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c
index 51c35013b673..93d4a9a39353 100644
--- a/arch/arm/mach-imx/system.c
+++ b/arch/arm/mach-imx/system.c
@@ -54,7 +54,7 @@ void mxc_restart(enum reboot_mode mode, const char *cmd)
 		wcr_enable = (1 << 2);
 
 	/* Assert SRS signal */
-	__raw_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
 	/*
 	 * Due to imx6q errata ERR004346 (WDOG: WDOG SRS bit requires to be
 	 * written twice), we add another two writes to ensure there must be at
@@ -62,8 +62,8 @@ void mxc_restart(enum reboot_mode mode, const char *cmd)
 	 * the target check here, since the writes shouldn't be a huge burden
 	 * for other platforms.
 	 */
-	__raw_writew(wcr_enable, wdog_base);
-	__raw_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
 
 	/* wait for reset to assert... */
 	mdelay(500);
diff --git a/arch/arm/mach-imx/tzic.c b/arch/arm/mach-imx/tzic.c
index 4de65eeda1eb..ae23d50f7861 100644
--- a/arch/arm/mach-imx/tzic.c
+++ b/arch/arm/mach-imx/tzic.c
@@ -65,10 +65,10 @@ static int tzic_set_irq_fiq(unsigned int irq, unsigned int type)
 		return -EINVAL;
 	mask = 1U << (irq & 0x1F);
 
-	value = __raw_readl(tzic_base + TZIC_INTSEC0(index)) | mask;
+	value = imx_readl(tzic_base + TZIC_INTSEC0(index)) | mask;
 	if (type)
 		value &= ~mask;
-	__raw_writel(value, tzic_base + TZIC_INTSEC0(index));
+	imx_writel(value, tzic_base + TZIC_INTSEC0(index));
 
 	return 0;
 }
@@ -82,15 +82,15 @@ static void tzic_irq_suspend(struct irq_data *d)
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
 	int idx = d->hwirq >> 5;
 
-	__raw_writel(gc->wake_active, tzic_base + TZIC_WAKEUP0(idx));
+	imx_writel(gc->wake_active, tzic_base + TZIC_WAKEUP0(idx));
 }
 
 static void tzic_irq_resume(struct irq_data *d)
 {
 	int idx = d->hwirq >> 5;
 
-	__raw_writel(__raw_readl(tzic_base + TZIC_ENSET0(idx)),
-		     tzic_base + TZIC_WAKEUP0(idx));
+	imx_writel(imx_readl(tzic_base + TZIC_ENSET0(idx)),
+		   tzic_base + TZIC_WAKEUP0(idx));
 }
 
 #else
@@ -135,8 +135,8 @@ static void __exception_irq_entry tzic_handle_irq(struct pt_regs *regs)
 		handled = 0;
 
 		for (i = 0; i < 4; i++) {
-			stat = __raw_readl(tzic_base + TZIC_HIPND(i)) &
-				__raw_readl(tzic_base + TZIC_INTSEC0(i));
+			stat = imx_readl(tzic_base + TZIC_HIPND(i)) &
+				imx_readl(tzic_base + TZIC_INTSEC0(i));
 
 			while (stat) {
 				handled = 1;
@@ -166,18 +166,18 @@ void __init tzic_init_irq(void)
 	/* put the TZIC into the reset value with
 	 * all interrupts disabled
 	 */
-	i = __raw_readl(tzic_base + TZIC_INTCNTL);
+	i = imx_readl(tzic_base + TZIC_INTCNTL);
 
-	__raw_writel(0x80010001, tzic_base + TZIC_INTCNTL);
-	__raw_writel(0x1f, tzic_base + TZIC_PRIOMASK);
-	__raw_writel(0x02, tzic_base + TZIC_SYNCCTRL);
+	imx_writel(0x80010001, tzic_base + TZIC_INTCNTL);
+	imx_writel(0x1f, tzic_base + TZIC_PRIOMASK);
+	imx_writel(0x02, tzic_base + TZIC_SYNCCTRL);
 
 	for (i = 0; i < 4; i++)
-		__raw_writel(0xFFFFFFFF, tzic_base + TZIC_INTSEC0(i));
+		imx_writel(0xFFFFFFFF, tzic_base + TZIC_INTSEC0(i));
 
 	/* disable all interrupts */
 	for (i = 0; i < 4; i++)
-		__raw_writel(0xFFFFFFFF, tzic_base + TZIC_ENCLEAR0(i));
+		imx_writel(0xFFFFFFFF, tzic_base + TZIC_ENCLEAR0(i));
 
 	/* all IRQ no FIQ Warning :: No selection */
 
@@ -214,13 +214,13 @@ int tzic_enable_wake(void)
 {
 	unsigned int i;
 
-	__raw_writel(1, tzic_base + TZIC_DSMINT);
-	if (unlikely(__raw_readl(tzic_base + TZIC_DSMINT) == 0))
+	imx_writel(1, tzic_base + TZIC_DSMINT);
+	if (unlikely(imx_readl(tzic_base + TZIC_DSMINT) == 0))
 		return -EAGAIN;
 
 	for (i = 0; i < 4; i++)
-		__raw_writel(__raw_readl(tzic_base + TZIC_ENSET0(i)),
-			     tzic_base + TZIC_WAKEUP0(i));
+		imx_writel(imx_readl(tzic_base + TZIC_ENSET0(i)),
+			   tzic_base + TZIC_WAKEUP0(i));
 
 	return 0;
 }
-- 
2.6.2

[PATCH v2 2/2] arm/mach-imx: enable big endian mode

[Johannes Berg]

Enable ARM big-endian mode on mach-imx. This requires adding some
byte swapping in the debug functions (which otherwise hang forever)
and of course the secondary core bringup.

Tested (on top of 4.4) on i.MX6 HummingBoard quad-core (IMX6Q).

The patch is pretty much as suggested by Arnd Bergmann, thanks!

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
---
 arch/arm/include/debug/imx.S | 3 +++
 arch/arm/mach-imx/Kconfig    | 1 +
 arch/arm/mach-imx/headsmp.S  | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S
index 619d8cc1ac12..92c44760d656 100644
--- a/arch/arm/include/debug/imx.S
+++ b/arch/arm/include/debug/imx.S
@@ -11,6 +11,7 @@
  *
  */
 
+#include <asm/assembler.h>
 #include "imx-uart.h"
 
 /*
@@ -34,6 +35,7 @@
 		.endm
 
 		.macro	senduart,rd,rx
+		ARM_BE8(rev \rd, \rd)
 		str	\rd, [\rx, #0x40]	@ TXDATA
 		.endm
 
@@ -42,6 +44,7 @@
 
 		.macro	busyuart,rd,rx
 1002:		ldr	\rd, [\rx, #0x98]	@ SR2
+		ARM_BE8(rev \rd, \rd)
 		tst	\rd, #1 << 3		@ TXDC
 		beq	1002b			@ wait until transmit done
 		.endm
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 15df34fbdf44..607e0fedbf1c 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -9,6 +9,7 @@ menuconfig ARCH_MXC
 	select PM_OPP if PM
 	select SOC_BUS
 	select SRAM
+	select ARCH_SUPPORTS_BIG_ENDIAN
 	help
 	  Support for Freescale MXC/iMX-based family of processors
 
diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S
index b5e976816b63..6c28d28b3c64 100644
--- a/arch/arm/mach-imx/headsmp.S
+++ b/arch/arm/mach-imx/headsmp.S
@@ -12,6 +12,7 @@
 
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <asm/assembler.h>
 
 diag_reg_offset:
 	.word	g_diag_reg - .
@@ -25,6 +26,7 @@ diag_reg_offset:
 	.endm
 
 ENTRY(v7_secondary_startup)
+ARM_BE8(setend be)			@ go BE8 if entered LE
 	set_diag_reg
 	b	secondary_startup
 ENDPROC(v7_secondary_startup)
-- 
2.6.2

[PATCH v2 2/2] arm/mach-imx: enable big endian mode

[Shawn Guo]

On Wed, Jan 27, 2016 at 05:59:36PM +0100, Johannes Berg wrote:
> Enable ARM big-endian mode on mach-imx. This requires adding some
> byte swapping in the debug functions (which otherwise hang forever)
> and of course the secondary core bringup.
> 
> Tested (on top of 4.4) on i.MX6 HummingBoard quad-core (IMX6Q).
> 
> The patch is pretty much as suggested by Arnd Bergmann, thanks!
> 
> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>

We conventionally use "ARM: imx: ..." as the subject for IMX platform
patches.

> ---
>  arch/arm/include/debug/imx.S | 3 +++
>  arch/arm/mach-imx/Kconfig    | 1 +
>  arch/arm/mach-imx/headsmp.S  | 2 ++
>  3 files changed, 6 insertions(+)
> 
> diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S
> index 619d8cc1ac12..92c44760d656 100644
> --- a/arch/arm/include/debug/imx.S
> +++ b/arch/arm/include/debug/imx.S
> @@ -11,6 +11,7 @@
>   *
>   */
>  
> +#include <asm/assembler.h>
>  #include "imx-uart.h"
>  
>  /*
> @@ -34,6 +35,7 @@
>  		.endm
>  
>  		.macro	senduart,rd,rx
> +		ARM_BE8(rev \rd, \rd)
>  		str	\rd, [\rx, #0x40]	@ TXDATA
>  		.endm
>  
> @@ -42,6 +44,7 @@
>  
>  		.macro	busyuart,rd,rx
>  1002:		ldr	\rd, [\rx, #0x98]	@ SR2
> +		ARM_BE8(rev \rd, \rd)
>  		tst	\rd, #1 << 3		@ TXDC
>  		beq	1002b			@ wait until transmit done
>  		.endm
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index 15df34fbdf44..607e0fedbf1c 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -9,6 +9,7 @@ menuconfig ARCH_MXC
>  	select PM_OPP if PM
>  	select SOC_BUS
>  	select SRAM
> +	select ARCH_SUPPORTS_BIG_ENDIAN

It should be added in alphabetical order.

I fixed these two minor things and applied both patches.

Shawn

>  	help
>  	  Support for Freescale MXC/iMX-based family of processors
>  
> diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S
> index b5e976816b63..6c28d28b3c64 100644
> --- a/arch/arm/mach-imx/headsmp.S
> +++ b/arch/arm/mach-imx/headsmp.S
> @@ -12,6 +12,7 @@
>  
>  #include <linux/linkage.h>
>  #include <linux/init.h>
> +#include <asm/assembler.h>
>  
>  diag_reg_offset:
>  	.word	g_diag_reg - .
> @@ -25,6 +26,7 @@ diag_reg_offset:
>  	.endm
>  
>  ENTRY(v7_secondary_startup)
> +ARM_BE8(setend be)			@ go BE8 if entered LE
>  	set_diag_reg
>  	b	secondary_startup
>  ENDPROC(v7_secondary_startup)
> -- 
> 2.6.2
> 
> 

[PATCH v2 2/2] arm/mach-imx: enable big endian mode

[Johannes Berg]

On Tue, 2016-02-02 at 13:33 +0800, Shawn Guo wrote:
>?
> We conventionally use "ARM: imx: ..." as the subject for IMX platform
> patches.

Fair enough. I thought I saw this style used in the git log, but I may
very well be mistaken :)

> > +++ b/arch/arm/mach-imx/Kconfig
> > @@ -9,6 +9,7 @@ menuconfig ARCH_MXC
> > ?	select PM_OPP if PM
> > ?	select SOC_BUS
> > ?	select SRAM
> > +	select ARCH_SUPPORTS_BIG_ENDIAN
> 
> It should be added in alphabetical order.

Heh, ok.

> I fixed these two minor things and applied both patches.

Great, thanks!

johannes