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ARM: imx6q: disable usb charger detector

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The external charger detector needs to be disabled,
or the signal at DP will be poor

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Richard Zhao 2012-07-12 10:25:24 +08:00 committed by Shawn Guo
parent 7571d283c8
commit 396bf1c24e
1 changed files with 41 additions and 0 deletions
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41
arch/arm/mach-imx/mach-imx6q.c
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@ -24,6 +24,7 @@
#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>
@ -113,6 +114,45 @@ static void __init imx6q_sabrelite_init(void)
imx6q_sabrelite_cko1_setup();
}
static void __init imx6q_usb_init(void)
{
struct device_node *np;
struct platform_device *pdev = NULL;
struct anatop *adata = NULL;
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop");
if (np)
pdev = of_find_device_by_node(np);
if (pdev)
adata = platform_get_drvdata(pdev);
if (!adata) {
if (np)
of_node_put(np);
return;
}
#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(adata, HW_ANADIG_USB1_CHRG_DETECT,
BM_ANADIG_USB_CHRG_DETECT_EN_B
| BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B,
~0);
anatop_write_reg(adata, HW_ANADIG_USB2_CHRG_DETECT,
BM_ANADIG_USB_CHRG_DETECT_EN_B |
BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B,
~0);
of_node_put(np);
}
static void __init imx6q_init_machine(void)
{
/*
@ -127,6 +167,7 @@ static void __init imx6q_init_machine(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
imx6q_pm_init();
imx6q_usb_init();
}
static void __init imx6q_map_io(void)