Commit c4ddc85e authored by Tim Lin's avatar Tim Lin Committed by Benjamin Cabé
Browse files

soc: it51xxx: Disable default 15K pull-down on GPF4/GPF5 



When GPIOF4 and GPIOF5 are not used as USB alternate function,
the default 15K pull-down should be disabled.

Signed-off-by: default avatarTim Lin <tim2.lin@ite.corp-partner.google.com>
parent 03f20f97

soc/ite/ec/it51xxx/chip_chipregs.h

+8 −2
Original line number Diff line number Diff line
@@ -91,8 +91,12 @@ struct smfi_it51xxx_regs { 
struct gpio_it51xxx_regs {

	/* 0x00: General Control */

	volatile uint8_t GPIO_GCR;

	/* 0x01-CF: Reserved_01_cf */

	volatile uint8_t reserved_01_cf[207];

	/* 0x01-C1: Reserved_01_c1 */

	volatile uint8_t reserved_01_c1[193];

	/* 0xC2: General Control 35 */

	volatile uint8_t GPIO_GCR35;

	/* 0xC3-CF: Reserved_c3_cf */

	volatile uint8_t reserved_c3_cf[13];

	/* 0xD0: General Control 31 */

	volatile uint8_t GPIO_GCR31;

	/* 0xD1: General Control 32 */
@@ -194,6 +198,8 @@ struct gpio_it51xxx_regs { 
/* 0x00: General Control */

#define IT51XXX_GPIO_LPCRSTEN             (BIT(2) | BIT(1))

#define ITE_EC_GPIO_LPCRSTEN              IT51XXX_GPIO_LPCRSTEN

/* 0xC2: General Control 35 */

#define IT51XXX_GPIO_USBPDEN              BIT(5)

/* 0xF0: General Control 1 */

#define IT51XXX_GPIO_U2CTRL_SIN1_SOUT1_EN BIT(2)

#define IT51XXX_GPIO_U1CTRL_SIN0_SOUT0_EN BIT(0)

soc/ite/ec/it51xxx/soc.c

+3 −0
Original line number Diff line number Diff line
@@ -117,6 +117,9 @@ void soc_prep_hook(void) 
	struct gpio_ite_ec_regs *const gpio_regs = GPIO_ITE_EC_REGS_BASE;

	struct gctrl_ite_ec_regs *const gctrl_regs = GCTRL_ITE_EC_REGS_BASE;



	/* USB pull down disable */

	gpio_regs->GPIO_GCR35 &= ~IT51XXX_GPIO_USBPDEN;



	/* Set FSPI pins are tri-state */

	sys_write8(sys_read8(IT51XXX_SMFI_FLHCTRL3R) | IT51XXX_SMFI_FFSPITRI,

		   IT51XXX_SMFI_FLHCTRL3R);

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