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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 10:39:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 10:39:26 -0800
commitdb5b0ae00712b5176d7405e7a1dd2bfd6e8f5070 (patch)
tree4e874d81ca9037dda1007178bbc9613649d43305 /arch/arm/mach-imx/mach-imx6q.c
parent6be35c700f742e911ecedd07fcc43d4439922334 (diff)
parent64507dd7028e3e0145077e73b8374bd75aea117c (diff)
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. ...
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6q.c')
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index cce33e433bd1..4eb1b3ac794c 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 = {