The external charger detector needs to be disabled,
or the signal at DP will be poor
Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
---
arch/arm/mach-imx/mach-imx6q.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 577cf19..c4f9b82 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -25,6 +25,7 @@
#include <linux/pinctrl/machine.h>
#include <linux/phy.h>
#include <linux/micrel_phy.h>
+#include <linux/mfd/anatop.h>
#include <asm/smp_twd.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/gic.h>
@@ -141,9 +142,32 @@ static void __init imx6q_config_on_boot(void)
of_node_put(np);
}
+static void __init imx6q_usb_init(void)
+{
+#define HW_ANADIG_USB1_CHRG_DETECT 0x000001b0
+#define HW_ANADIG_USB2_CHRG_DETECT 0x00000210
+
+#define BM_ANADIG_USB_CHRG_DETECT_EN_B 0x00100000
+#define BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B 0x00080000
+
+ /*
+ * The external charger detector needs to be disabled,
+ * or the signal at DP will be poor
+ */
+ anatop_write_reg(NULL, HW_ANADIG_USB1_CHRG_DETECT,
+ BM_ANADIG_USB_CHRG_DETECT_EN_B
+ | BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B,
+ ~0);
+ anatop_write_reg(NULL, HW_ANADIG_USB2_CHRG_DETECT,
+ BM_ANADIG_USB_CHRG_DETECT_EN_B |
+ BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B,
+ ~0);
+}
+
static void __init imx6q_post_populate(void)
{
imx6q_config_on_boot();
+ imx6q_usb_init();
}
static void __init imx6q_init_machine(void)
--
1.7.5.4
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