Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC device tree conversions and enablement from Olof Johansson:
 "Continued device tree conversion and enablement across a number of
  platforms; Kirkwood, tegra, i.MX, Exynos, zynq and a couple of other
  smaller series as well.

  ux500 has seen continued conversion for platforms.  Several platforms
  have seen pinctrl-via-devicetree conversions for simpler
  multiplatform.  Tegra is adding data for new devices/drivers, and
  Exynos has a bunch of new bindings and devices added as well.

  So, pretty much the same progression in the right direction as the
  last few releases."

Fix up conflicts as per Olof.

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (185 commits)
  ARM: ux500: Rename dbx500 cpufreq code to be more generic
  ARM: dts: add missing ux500 device trees
  ARM: ux500: Stop registering the PCM driver from platform code
  ARM: ux500: Move board specific GPIO info out to subordinate DTS files
  ARM: ux500: Disable the MMCI gpio-regulator by default
  ARM: Kirkwood: remove kirkwood_ehci_init() from new boards
  ARM: Kirkwood: Add support LED of OpenBlocks A6
  ARM: Kirkwood: Convert to EHCI via DT for OpenBlocks A6
  ARM: kirkwood: Add NAND partiton map for OpenBlocks A6
  ARM: kirkwood: Add support second I2C bus and RTC on OpenBlocks A6
  ARM: kirkwood: Add support DT of second I2C bus
  ARM: kirkwood: Convert mplcec4 board to pinctrl
  ARM: Kirkwood: Convert km_kirkwood to pinctrl
  ARM: Kirkwood: support 98DX412x kirkwoods with pinctrl
  ARM: Kirkwood: Convert IX2-200 to pinctrl.
  ARM: Kirkwood: Convert lsxl boards to pinctrl.
  ARM: Kirkwood: Convert ib62x0 to pinctrl.
  ARM: Kirkwood: Convert GoFlex Net to pinctrl.
  ARM: Kirkwood: Convert dreamplug to pinctrl.
  ARM: Kirkwood: Convert dockstar to pinctrl.
  ...

9 files changed, 229 insertions, 26 deletions

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 4e24b8c77eb..1ad0d76de8c 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -272,6 +272,13 @@ config MACH_EUKREA_MBIMXSD25_BASEBOARD
 
 endchoice
 
+config MACH_IMX25_DT
+	bool "Support i.MX25 platforms from device tree"
+	select SOC_IMX25
+	help
+	  Include support for Freescale i.MX25 based platforms
+	  using the device tree for discovery
+
 comment "MX27 platforms:"
 
 config MACH_MX27ADS
@@ -831,7 +838,14 @@ config	SOC_IMX53
 
 config SOC_IMX6Q
 	bool "i.MX6 Quad support"
+	select ARCH_HAS_CPUFREQ
+	select ARCH_HAS_OPP
 	select ARM_CPU_SUSPEND if PM
+	select ARM_ERRATA_743622
+	select ARM_ERRATA_751472
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_764369 if SMP
+	select ARM_ERRATA_775420
 	select ARM_GIC
 	select COMMON_CLK
 	select CPU_V7
@@ -843,6 +857,10 @@ config SOC_IMX6Q
 	select MFD_SYSCON
 	select PINCTRL
 	select PINCTRL_IMX6Q
+	select PL310_ERRATA_588369 if CACHE_PL310
+	select PL310_ERRATA_727915 if CACHE_PL310
+	select PL310_ERRATA_769419 if CACHE_PL310
+	select PM_OPP if PM
 
 	help
 	  This enables support for Freescale i.MX6 Quad processor.
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index fe47b71469c..0634b3152c2 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_MACH_MX21ADS) += mach-mx21ads.o
 obj-$(CONFIG_MACH_MX25_3DS) += mach-mx25_3ds.o
 obj-$(CONFIG_MACH_EUKREA_CPUIMX25SD) += mach-eukrea_cpuimx25.o
 obj-$(CONFIG_MACH_EUKREA_MBIMXSD25_BASEBOARD) += eukrea_mbimxsd25-baseboard.o
+obj-$(CONFIG_MACH_IMX25_DT) += imx25-dt.o
 
 # i.MX27 based machines
 obj-$(CONFIG_MACH_MX27ADS) += mach-mx27ads.o
diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c
index bc885801cd6..b197aa73dc4 100644
--- a/arch/arm/mach-imx/clk-imx25.c
+++ b/arch/arm/mach-imx/clk-imx25.c
@@ -23,6 +23,9 @@
 #include <linux/io.h>
 #include <linux/clkdev.h>
 #include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #include "clk.h"
 #include "common.h"
@@ -55,6 +58,8 @@
 
 #define ccm(x)	(CRM_BASE + (x))
 
+static struct clk_onecell_data clk_data;
+
 static const char *cpu_sel_clks[] = { "mpll", "mpll_cpu_3_4", };
 static const char *per_sel_clks[] = { "ahb", "upll", };
 
@@ -64,24 +69,30 @@ enum mx25_clks {
 	per7_sel, per8_sel, per9_sel, per10_sel, per11_sel, per12_sel,
 	per13_sel, per14_sel, per15_sel, per0, per1, per2, per3, per4, per5,
 	per6, per7, per8, per9, per10, per11, per12, per13, per14, per15,
-	csi_ipg_per, esdhc1_ipg_per, esdhc2_ipg_per, gpt_ipg_per, i2c_ipg_per,
-	lcdc_ipg_per, nfc_ipg_per, ssi1_ipg_per, ssi2_ipg_per, uart_ipg_per,
-	csi_ahb, esdhc1_ahb, esdhc2_ahb, fec_ahb, lcdc_ahb, sdma_ahb,
-	usbotg_ahb, can1_ipg, can2_ipg, csi_ipg, cspi1_ipg, cspi2_ipg,
-	cspi3_ipg, dryice_ipg, esdhc1_ipg, esdhc2_ipg, fec_ipg, iim_ipg,
-	kpp_ipg, lcdc_ipg, pwm1_ipg, pwm2_ipg, pwm3_ipg, pwm4_ipg, sdma_ipg,
-	ssi1_ipg, ssi2_ipg, tsc_ipg, uart1_ipg, uart2_ipg, uart3_ipg,
-	uart4_ipg, uart5_ipg, wdt_ipg, clk_max
+	csi_ipg_per, epit_ipg_per, esai_ipg_per, esdhc1_ipg_per, esdhc2_ipg_per,
+	gpt_ipg_per, i2c_ipg_per, lcdc_ipg_per, nfc_ipg_per, owire_ipg_per,
+	pwm_ipg_per, sim1_ipg_per, sim2_ipg_per, ssi1_ipg_per, ssi2_ipg_per,
+	uart_ipg_per, ata_ahb, reserved1, csi_ahb, emi_ahb, esai_ahb, esdhc1_ahb,
+	esdhc2_ahb, fec_ahb, lcdc_ahb, rtic_ahb, sdma_ahb, slcdc_ahb, usbotg_ahb,
+	reserved2, reserved3, reserved4, reserved5, can1_ipg, can2_ipg,	csi_ipg,
+	cspi1_ipg, cspi2_ipg, cspi3_ipg, dryice_ipg, ect_ipg, epit1_ipg, epit2_ipg,
+	reserved6, esdhc1_ipg, esdhc2_ipg, fec_ipg, reserved7, reserved8, reserved9,
+	gpt1_ipg, gpt2_ipg, gpt3_ipg, gpt4_ipg, reserved10, reserved11, reserved12,
+	iim_ipg, reserved13, reserved14, kpp_ipg, lcdc_ipg, reserved15, pwm1_ipg,
+	pwm2_ipg, pwm3_ipg, pwm4_ipg, rngb_ipg, reserved16, scc_ipg, sdma_ipg,
+	sim1_ipg, sim2_ipg, slcdc_ipg, spba_ipg, ssi1_ipg, ssi2_ipg, tsc_ipg,
+	uart1_ipg, uart2_ipg, uart3_ipg, uart4_ipg, uart5_ipg, reserved17,
+	wdt_ipg, clk_max
 };
 
 static struct clk *clk[clk_max];
 
-int __init mx25_clocks_init(void)
+static int __init __mx25_clocks_init(unsigned long osc_rate)
 {
 	int i;
 
 	clk[dummy] = imx_clk_fixed("dummy", 0);
-	clk[osc] = imx_clk_fixed("osc", 24000000);
+	clk[osc] = imx_clk_fixed("osc", osc_rate);
 	clk[mpll] = imx_clk_pllv1("mpll", "osc", ccm(CCM_MPCTL));
 	clk[upll] = imx_clk_pllv1("upll", "osc", ccm(CCM_UPCTL));
 	clk[mpll_cpu_3_4] = imx_clk_fixed_factor("mpll_cpu_3_4", "mpll", 3, 4);
@@ -123,22 +134,36 @@ int __init mx25_clocks_init(void)
 	clk[per14] = imx_clk_divider("per14", "per14_sel", ccm(CCM_PCDR3), 16, 6);
 	clk[per15] = imx_clk_divider("per15", "per15_sel", ccm(CCM_PCDR3), 24, 6);
 	clk[csi_ipg_per] = imx_clk_gate("csi_ipg_per", "per0", ccm(CCM_CGCR0), 0);
+	clk[epit_ipg_per] = imx_clk_gate("epit_ipg_per", "per1", ccm(CCM_CGCR0),  1);
+	clk[esai_ipg_per] = imx_clk_gate("esai_ipg_per", "per2", ccm(CCM_CGCR0),  2);
 	clk[esdhc1_ipg_per] = imx_clk_gate("esdhc1_ipg_per", "per3", ccm(CCM_CGCR0),  3);
 	clk[esdhc2_ipg_per] = imx_clk_gate("esdhc2_ipg_per", "per4", ccm(CCM_CGCR0),  4);
 	clk[gpt_ipg_per] = imx_clk_gate("gpt_ipg_per", "per5", ccm(CCM_CGCR0),  5);
 	clk[i2c_ipg_per] = imx_clk_gate("i2c_ipg_per", "per6", ccm(CCM_CGCR0),  6);
 	clk[lcdc_ipg_per] = imx_clk_gate("lcdc_ipg_per", "per7", ccm(CCM_CGCR0),  7);
 	clk[nfc_ipg_per] = imx_clk_gate("nfc_ipg_per", "per8", ccm(CCM_CGCR0),  8);
+	clk[owire_ipg_per] = imx_clk_gate("owire_ipg_per", "per9", ccm(CCM_CGCR0),  9);
+	clk[pwm_ipg_per] = imx_clk_gate("pwm_ipg_per", "per10", ccm(CCM_CGCR0),  10);
+	clk[sim1_ipg_per] = imx_clk_gate("sim1_ipg_per", "per11", ccm(CCM_CGCR0),  11);
+	clk[sim2_ipg_per] = imx_clk_gate("sim2_ipg_per", "per12", ccm(CCM_CGCR0),  12);
 	clk[ssi1_ipg_per] = imx_clk_gate("ssi1_ipg_per", "per13", ccm(CCM_CGCR0), 13);
 	clk[ssi2_ipg_per] = imx_clk_gate("ssi2_ipg_per", "per14", ccm(CCM_CGCR0), 14);
 	clk[uart_ipg_per] = imx_clk_gate("uart_ipg_per", "per15", ccm(CCM_CGCR0), 15);
+	clk[ata_ahb] = imx_clk_gate("ata_ahb", "ahb", ccm(CCM_CGCR0), 16);
+	/* CCM_CGCR0(17): reserved */
 	clk[csi_ahb] = imx_clk_gate("csi_ahb", "ahb", ccm(CCM_CGCR0), 18);
+	clk[emi_ahb] = imx_clk_gate("emi_ahb", "ahb", ccm(CCM_CGCR0), 19);
+	clk[esai_ahb] = imx_clk_gate("esai_ahb", "ahb", ccm(CCM_CGCR0), 20);
 	clk[esdhc1_ahb] = imx_clk_gate("esdhc1_ahb", "ahb", ccm(CCM_CGCR0), 21);
 	clk[esdhc2_ahb] = imx_clk_gate("esdhc2_ahb", "ahb", ccm(CCM_CGCR0), 22);
 	clk[fec_ahb] = imx_clk_gate("fec_ahb", "ahb", ccm(CCM_CGCR0), 23);
 	clk[lcdc_ahb] = imx_clk_gate("lcdc_ahb", "ahb", ccm(CCM_CGCR0), 24);
+	clk[rtic_ahb] = imx_clk_gate("rtic_ahb", "ahb", ccm(CCM_CGCR0), 25);
 	clk[sdma_ahb] = imx_clk_gate("sdma_ahb", "ahb", ccm(CCM_CGCR0), 26);
+	clk[slcdc_ahb] = imx_clk_gate("slcdc_ahb", "ahb", ccm(CCM_CGCR0), 27);
 	clk[usbotg_ahb] = imx_clk_gate("usbotg_ahb", "ahb", ccm(CCM_CGCR0), 28);
+	/* CCM_CGCR0(29-31): reserved */
+	/* CCM_CGCR1(0): reserved in datasheet, used as audmux in FSL kernel */
 	clk[can1_ipg] = imx_clk_gate("can1_ipg", "ipg", ccm(CCM_CGCR1),  2);
 	clk[can2_ipg] = imx_clk_gate("can2_ipg", "ipg", ccm(CCM_CGCR1),  3);
 	clk[csi_ipg] = imx_clk_gate("csi_ipg", "ipg", ccm(CCM_CGCR1),  4);
@@ -146,17 +171,41 @@ int __init mx25_clocks_init(void)
 	clk[cspi2_ipg] = imx_clk_gate("cspi2_ipg", "ipg", ccm(CCM_CGCR1),  6);
 	clk[cspi3_ipg] = imx_clk_gate("cspi3_ipg", "ipg", ccm(CCM_CGCR1),  7);
 	clk[dryice_ipg] = imx_clk_gate("dryice_ipg", "ipg", ccm(CCM_CGCR1),  8);
+	clk[ect_ipg] = imx_clk_gate("ect_ipg", "ipg", ccm(CCM_CGCR1),  9);
+	clk[epit1_ipg] = imx_clk_gate("epit1_ipg", "ipg", ccm(CCM_CGCR1),  10);
+	clk[epit2_ipg] = imx_clk_gate("epit2_ipg", "ipg", ccm(CCM_CGCR1),  11);
+	/* CCM_CGCR1(12): reserved in datasheet, used as esai in FSL kernel */
 	clk[esdhc1_ipg] = imx_clk_gate("esdhc1_ipg", "ipg", ccm(CCM_CGCR1), 13);
 	clk[esdhc2_ipg] = imx_clk_gate("esdhc2_ipg", "ipg", ccm(CCM_CGCR1), 14);
 	clk[fec_ipg] = imx_clk_gate("fec_ipg", "ipg", ccm(CCM_CGCR1), 15);
+	/* CCM_CGCR1(16): reserved in datasheet, used as gpio1 in FSL kernel */
+	/* CCM_CGCR1(17): reserved in datasheet, used as gpio2 in FSL kernel */
+	/* CCM_CGCR1(18): reserved in datasheet, used as gpio3 in FSL kernel */
+	clk[gpt1_ipg] = imx_clk_gate("gpt1_ipg", "ipg", ccm(CCM_CGCR1), 19);
+	clk[gpt2_ipg] = imx_clk_gate("gpt2_ipg", "ipg", ccm(CCM_CGCR1), 20);
+	clk[gpt3_ipg] = imx_clk_gate("gpt3_ipg", "ipg", ccm(CCM_CGCR1), 21);
+	clk[gpt4_ipg] = imx_clk_gate("gpt4_ipg", "ipg", ccm(CCM_CGCR1), 22);
+	/* CCM_CGCR1(23): reserved in datasheet, used as i2c1 in FSL kernel */
+	/* CCM_CGCR1(24): reserved in datasheet, used as i2c2 in FSL kernel */
+	/* CCM_CGCR1(25): reserved in datasheet, used as i2c3 in FSL kernel */
 	clk[iim_ipg] = imx_clk_gate("iim_ipg", "ipg", ccm(CCM_CGCR1), 26);
+	/* CCM_CGCR1(27): reserved in datasheet, used as iomuxc in FSL kernel */
+	/* CCM_CGCR1(28): reserved in datasheet, used as kpp in FSL kernel */
 	clk[kpp_ipg] = imx_clk_gate("kpp_ipg", "ipg", ccm(CCM_CGCR1), 28);
 	clk[lcdc_ipg] = imx_clk_gate("lcdc_ipg", "ipg", ccm(CCM_CGCR1), 29);
+	/* CCM_CGCR1(30): reserved in datasheet, used as owire in FSL kernel */
 	clk[pwm1_ipg] = imx_clk_gate("pwm1_ipg", "ipg", ccm(CCM_CGCR1), 31);
 	clk[pwm2_ipg] = imx_clk_gate("pwm2_ipg", "ipg", ccm(CCM_CGCR2),  0);
 	clk[pwm3_ipg] = imx_clk_gate("pwm3_ipg", "ipg", ccm(CCM_CGCR2),  1);
 	clk[pwm4_ipg] = imx_clk_gate("pwm4_ipg", "ipg", ccm(CCM_CGCR2),  2);
+	clk[rngb_ipg] = imx_clk_gate("rngb_ipg", "ipg", ccm(CCM_CGCR2),  3);
+	/* CCM_CGCR2(4): reserved in datasheet, used as rtic in FSL kernel */
+	clk[scc_ipg] = imx_clk_gate("scc_ipg", "ipg", ccm(CCM_CGCR2),  5);
 	clk[sdma_ipg] = imx_clk_gate("sdma_ipg", "ipg", ccm(CCM_CGCR2),  6);
+	clk[sim1_ipg] = imx_clk_gate("sim1_ipg", "ipg", ccm(CCM_CGCR2),  7);
+	clk[sim2_ipg] = imx_clk_gate("sim2_ipg", "ipg", ccm(CCM_CGCR2),  8);
+	clk[slcdc_ipg] = imx_clk_gate("slcdc_ipg", "ipg", ccm(CCM_CGCR2),  9);
+	clk[spba_ipg] = imx_clk_gate("spba_ipg", "ipg", ccm(CCM_CGCR2),  10);
 	clk[ssi1_ipg] = imx_clk_gate("ssi1_ipg", "ipg", ccm(CCM_CGCR2), 11);
 	clk[ssi2_ipg] = imx_clk_gate("ssi2_ipg", "ipg", ccm(CCM_CGCR2), 12);
 	clk[tsc_ipg] = imx_clk_gate("tsc_ipg", "ipg", ccm(CCM_CGCR2), 13);
@@ -165,6 +214,7 @@ int __init mx25_clocks_init(void)
 	clk[uart3_ipg] = imx_clk_gate("uart3_ipg", "ipg", ccm(CCM_CGCR2), 16);
 	clk[uart4_ipg] = imx_clk_gate("uart4_ipg", "ipg", ccm(CCM_CGCR2), 17);
 	clk[uart5_ipg] = imx_clk_gate("uart5_ipg", "ipg", ccm(CCM_CGCR2), 18);
+	/* CCM_CGCR2(19): reserved in datasheet, but used as wdt in FSL kernel */
 	clk[wdt_ipg] = imx_clk_gate("wdt_ipg", "ipg", ccm(CCM_CGCR2), 19);
 
 	for (i = 0; i < ARRAY_SIZE(clk); i++)
@@ -172,6 +222,18 @@ int __init mx25_clocks_init(void)
 			pr_err("i.MX25 clk %d: register failed with %ld\n",
 				i, PTR_ERR(clk[i]));
 
+	clk_prepare_enable(clk[emi_ahb]);
+
+	clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0");
+	clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0");
+
+	return 0;
+}
+
+int __init mx25_clocks_init(void)
+{
+	__mx25_clocks_init(24000000);
+
 	/* i.mx25 has the i.mx21 type uart */
 	clk_register_clkdev(clk[uart1_ipg], "ipg", "imx21-uart.0");
 	clk_register_clkdev(clk[uart_ipg_per], "per", "imx21-uart.0");
@@ -183,8 +245,6 @@ int __init mx25_clocks_init(void)
 	clk_register_clkdev(clk[uart_ipg_per], "per", "imx21-uart.3");
 	clk_register_clkdev(clk[uart5_ipg], "ipg", "imx21-uart.4");
 	clk_register_clkdev(clk[uart_ipg_per], "per", "imx21-uart.4");
-	clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0");
-	clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0");
 	clk_register_clkdev(clk[ipg], "ipg", "mxc-ehci.0");
 	clk_register_clkdev(clk[usbotg_ahb], "ahb", "mxc-ehci.0");
 	clk_register_clkdev(clk[usb_div], "per", "mxc-ehci.0");
@@ -242,5 +302,40 @@ int __init mx25_clocks_init(void)
 	clk_register_clkdev(clk[iim_ipg], "iim", NULL);
 
 	mxc_timer_init(MX25_IO_ADDRESS(MX25_GPT1_BASE_ADDR), MX25_INT_GPT1);
+
+	return 0;
+}
+
+int __init mx25_clocks_init_dt(void)
+{
+	struct device_node *np;
+	void __iomem *base;
+	int irq;
+	unsigned long osc_rate = 24000000;
+
+	/* retrieve the freqency of fixed clocks from device tree */
+	for_each_compatible_node(np, NULL, "fixed-clock") {
+		u32 rate;
+		if (of_property_read_u32(np, "clock-frequency", &rate))
+			continue;
+
+		if (of_device_is_compatible(np, "fsl,imx-osc"))
+			osc_rate = rate;
+	}
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx25-ccm");
+	clk_data.clks = clk;
+	clk_data.clk_num = ARRAY_SIZE(clk);
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+
+	__mx25_clocks_init(osc_rate);
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx25-gpt");
+	base = of_iomap(np, 0);
+	WARN_ON(!base);
+	irq = irq_of_parse_and_map(np, 0);
+
+	mxc_timer_init(base, irq);
+
 	return 0;
 }
diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 448476958e7..7f2c10c7413 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -424,6 +424,7 @@ int __init mx6q_clocks_init(void)
 	clk_register_clkdev(clk[cko1_sel], "cko1_sel", NULL);
 	clk_register_clkdev(clk[ahb], "ahb", NULL);
 	clk_register_clkdev(clk[cko1], "cko1", NULL);
+	clk_register_clkdev(clk[arm], NULL, "cpu0");
 
 	/*
 	 * The gpmi needs 100MHz frequency in the EDO/Sync mode,
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
index ef8db6b3484..7191ab4434e 100644
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -66,6 +66,7 @@ extern int mx51_clocks_init(unsigned long ckil, unsigned long osc,
 			unsigned long ckih1, unsigned long ckih2);
 extern int mx53_clocks_init(unsigned long ckil, unsigned long osc,
 			unsigned long ckih1, unsigned long ckih2);
+extern int mx25_clocks_init_dt(void);
 extern int mx27_clocks_init_dt(void);
 extern int mx31_clocks_init_dt(void);
 extern int mx51_clocks_init_dt(void);
diff --git a/arch/arm/mach-imx/imx25-dt.c b/arch/arm/mach-imx/imx25-dt.c
new file mode 100644
index 00000000000..e17dfbc4219
--- /dev/null
+++ b/arch/arm/mach-imx/imx25-dt.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2012 Sascha Hauer, Pengutronix
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/irq.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include "common.h"
+#include "mx25.h"
+
+static void __init imx25_dt_init(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static void __init imx25_timer_init(void)
+{
+	mx25_clocks_init_dt();
+}
+
+static struct sys_timer imx25_timer = {
+	.init = imx25_timer_init,
+};
+
+static const char * const imx25_dt_board_compat[] __initconst = {
+	"fsl,imx25",
+	NULL
+};
+
+DT_MACHINE_START(IMX25_DT, "Freescale i.MX25 (Device Tree Support)")
+	.map_io		= mx25_map_io,
+	.init_early	= imx25_init_early,
+	.init_irq	= mx25_init_irq,
+	.handle_irq	= imx25_handle_irq,
+	.timer		= &imx25_timer,
+	.init_machine	= imx25_dt_init,
+	.dt_compat	= imx25_dt_board_compat,
+	.restart	= mxc_restart,
+MACHINE_END
diff --git a/arch/arm/mach-imx/lluart.c b/arch/arm/mach-imx/lluart.c
index 5f1510363ee..2fdc9bf2fb5 100644
--- a/arch/arm/mach-imx/lluart.c
+++ b/arch/arm/mach-imx/lluart.c
@@ -17,17 +17,25 @@
 
 #include "hardware.h"
 
+#define IMX6Q_UART1_BASE_ADDR	0x02020000
+#define IMX6Q_UART2_BASE_ADDR	0x021e8000
+#define IMX6Q_UART3_BASE_ADDR	0x021ec000
+#define IMX6Q_UART4_BASE_ADDR	0x021f0000
+#define IMX6Q_UART5_BASE_ADDR	0x021f4000
+
+/*
+ * IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
+ * of IMX6Q_UART##n##_BASE_ADDR.
+ */
+#define IMX6Q_UART_BASE_ADDR(n)	IMX6Q_UART##n##_BASE_ADDR
+#define IMX6Q_UART_BASE(n)	IMX6Q_UART_BASE_ADDR(n)
+#define IMX6Q_DEBUG_UART_BASE	IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
+
 static struct map_desc imx_lluart_desc = {
-#ifdef CONFIG_DEBUG_IMX6Q_UART2
-	.virtual	= MX6Q_IO_P2V(MX6Q_UART2_BASE_ADDR),
-	.pfn		= __phys_to_pfn(MX6Q_UART2_BASE_ADDR),
-	.length		= MX6Q_UART2_SIZE,
-	.type		= MT_DEVICE,
-#endif
-#ifdef CONFIG_DEBUG_IMX6Q_UART4
-	.virtual	= MX6Q_IO_P2V(MX6Q_UART4_BASE_ADDR),
-	.pfn		= __phys_to_pfn(MX6Q_UART4_BASE_ADDR),
-	.length		= MX6Q_UART4_SIZE,
+#ifdef CONFIG_DEBUG_IMX6Q_UART
+	.virtual	= IMX_IO_P2V(IMX6Q_DEBUG_UART_BASE),
+	.pfn		= __phys_to_pfn(IMX6Q_DEBUG_UART_BASE),
+	.length		= 0x4000,
 	.type		= MT_DEVICE,
 #endif
 };
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index cce33e433bd..4eb1b3ac794 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -38,6 +38,40 @@
 #include "cpuidle.h"
 #include "hardware.h"
 
+#define IMX6Q_ANALOG_DIGPROG	0x260
+
+static int imx6q_revision(void)
+{
+	struct device_node *np;
+	void __iomem *base;
+	static u32 rev;
+
+	if (!rev) {
+		np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop");
+		if (!np)
+			return IMX_CHIP_REVISION_UNKNOWN;
+		base = of_iomap(np, 0);
+		if (!base) {
+			of_node_put(np);
+			return IMX_CHIP_REVISION_UNKNOWN;
+		}
+		rev =  readl_relaxed(base + IMX6Q_ANALOG_DIGPROG);
+		iounmap(base);
+		of_node_put(np);
+	}
+
+	switch (rev & 0xff) {
+	case 0:
+		return IMX_CHIP_REVISION_1_0;
+	case 1:
+		return IMX_CHIP_REVISION_1_1;
+	case 2:
+		return IMX_CHIP_REVISION_1_2;
+	default:
+		return IMX_CHIP_REVISION_UNKNOWN;
+	}
+}
+
 void imx6q_restart(char mode, const char *cmd)
 {
 	struct device_node *np;
@@ -204,6 +238,7 @@ static void __init imx6q_timer_init(void)
 {
 	mx6q_clocks_init();
 	twd_local_timer_of_register();
+	imx_print_silicon_rev("i.MX6Q", imx6q_revision());
 }
 
 static struct sys_timer imx6q_timer = {
diff --git a/arch/arm/mach-imx/mx6q.h b/arch/arm/mach-imx/mx6q.h
index f7e7dbac8f4..19d3f54db5a 100644
--- a/arch/arm/mach-imx/mx6q.h
+++ b/arch/arm/mach-imx/mx6q.h
@@ -27,9 +27,5 @@
 #define MX6Q_CCM_SIZE			0x4000
 #define MX6Q_ANATOP_BASE_ADDR		0x020c8000
 #define MX6Q_ANATOP_SIZE		0x1000
-#define MX6Q_UART2_BASE_ADDR		0x021e8000
-#define MX6Q_UART2_SIZE			0x4000
-#define MX6Q_UART4_BASE_ADDR		0x021f0000
-#define MX6Q_UART4_SIZE			0x4000
 
 #endif	/* __MACH_MX6Q_H__ */