The external charger detector needs to be disabled, or the signal at DP will be poor
Signed-off-by: Richard Zhao <[email protected]> --- arch/arm/mach-imx/mach-imx6q.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 577cf19..0bfd8c7 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 +142,33 @@ 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 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
