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Diffstat (limited to 'arch/arm/mach-imx/mach-imx6q.c')
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c53
1 files changed, 50 insertions, 3 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 47c91f7185d..4eb1b3ac794 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -33,10 +33,44 @@
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/system_misc.h>
-#include <mach/common.h>
-#include <mach/cpuidle.h>
-#include <mach/hardware.h>
+#include "common.h"
+#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)
{
@@ -117,6 +151,17 @@ static void __init imx6q_sabrelite_init(void)
imx6q_sabrelite_cko1_setup();
}
+static void __init imx6q_1588_init(void)
+{
+ struct regmap *gpr;
+
+ gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+ if (!IS_ERR(gpr))
+ regmap_update_bits(gpr, 0x4, 1 << 21, 1 << 21);
+ else
+ pr_err("failed to find fsl,imx6q-iomux-gpr regmap\n");
+
+}
static void __init imx6q_usb_init(void)
{
struct regmap *anatop;
@@ -153,6 +198,7 @@ static void __init imx6q_init_machine(void)
imx6q_pm_init();
imx6q_usb_init();
+ imx6q_1588_init();
}
static struct cpuidle_driver imx6q_cpuidle_driver = {
@@ -192,6 +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 = {