diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/npcm_i2c.c | 7 | ||||
| -rw-r--r-- | drivers/misc/npcm_host_intf.c | 33 | ||||
| -rw-r--r-- | drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c | 2 |
3 files changed, 41 insertions, 1 deletions
diff --git a/drivers/i2c/npcm_i2c.c b/drivers/i2c/npcm_i2c.c index c64752e1467..bff0d04f1a5 100644 --- a/drivers/i2c/npcm_i2c.c +++ b/drivers/i2c/npcm_i2c.c @@ -34,6 +34,7 @@ #define SMBCTL3_SDA_LVL BIT(6) /* SMBCST */ +#define SMBCST_BUSY BIT(0) #define SMBCST_BB BIT(1) #define SMBCST_TGSCL BIT(5) @@ -479,11 +480,17 @@ static int npcm_i2c_xfer(struct udevice *dev, struct npcm_i2c_bus *bus = dev_get_priv(dev); struct npcm_i2c_regs *reg = bus->reg; int ret = 0, err = 0; + u8 val; if (nmsgs < 1 || nmsgs > 2) { printf("%s: commands not support\n", __func__); return -EREMOTEIO; } + + /* Wait for module out of busy */ + if (readb_poll_timeout(®->cst, val, !(val & SMBCST_BUSY), 1000)) + return -EBUSY; + /* clear ST register */ writeb(0xFF, ®->st); diff --git a/drivers/misc/npcm_host_intf.c b/drivers/misc/npcm_host_intf.c index 58bab888c3c..e3b0663625b 100644 --- a/drivers/misc/npcm_host_intf.c +++ b/drivers/misc/npcm_host_intf.c @@ -22,6 +22,8 @@ /* ESPI Register offsets */ #define ESPICFG 0x4 #define ESPIHINDP 0x80 +#define ESPI_TEN 0xF0 +#define ESPI_ENG 0xF1 /* MFSEL bit fileds */ #define MFSEL1_LPCSEL BIT(26) @@ -40,10 +42,23 @@ #define AUTO_HS2 BIT(12) #define AUTO_HS3 BIT(16) +#define ESPI_TEN_ENABLE 0x55 +#define ESPI_TEN_DISABLE 0 + +/* KCS/BPC interrupt control */ +#define BPCFEN 0x46 +#define FRIE BIT(3) +#define HRIE BIT(4) +#define KCS1CTL 0x18 +#define KCS2CTL 0x2a +#define KCS3CTL 0x3c +#define IBFIE BIT(0) +#define OBEIE BIT(1) + static int npcm_host_intf_bind(struct udevice *dev) { struct regmap *syscon; - void __iomem *base; + void __iomem *base, *kcs_base; u32 ch_supp, val; u32 ioaddr; const char *type; @@ -83,6 +98,13 @@ static int npcm_host_intf_bind(struct udevice *dev) val &= ~(CHSUPP_MASK | IOMODE_MASK | MAXFREQ_MASK); val |= IOMODE_SDQ | MAXFREQ_33MHZ | FIELD_PREP(CHSUPP_MASK, ch_supp); writel(val, base + ESPICFG); + + if (device_is_compatible(dev, "nuvoton,npcm845-host-intf")) { + /* Workaround: avoid eSPI module getting into wrong state */ + writeb(ESPI_TEN_ENABLE, base + ESPI_TEN); + writeb(BIT(6), base + ESPI_ENG); + writeb(ESPI_TEN_DISABLE, base + ESPI_TEN); + } } else if (!strcmp(type, "lpc")) { /* Select LPC pin function */ regmap_update_bits(syscon, MFSEL4, MFSEL4_ESPISEL, 0); @@ -92,6 +114,15 @@ static int npcm_host_intf_bind(struct udevice *dev) /* Release host wait */ setbits_8(SMC_CTL_REG_ADDR, SMC_CTL_HOSTWAIT); + kcs_base = dev_read_addr_index_ptr(dev, 1); + if (kcs_base) { + /* Disable KCS/BPC interrupts */ + clrbits_8(kcs_base + BPCFEN, FRIE | HRIE); + clrbits_8(kcs_base + KCS1CTL, IBFIE | OBEIE); + clrbits_8(kcs_base + KCS2CTL, IBFIE | OBEIE); + clrbits_8(kcs_base + KCS3CTL, IBFIE | OBEIE); + } + return 0; } diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c index 67e564f85c3..c960ca3393d 100644 --- a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c +++ b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c @@ -23,6 +23,7 @@ #define TIPRSTC 0x50 #define CORSTC 0x5c #define FLOCKR1 0x74 +#define INTCR 0x3c #define INTCR4 0xc0 #define I2CSEGSEL 0xe0 #define MFSEL1 0x260 @@ -280,6 +281,7 @@ struct npcm8xx_pinctrl_priv { FUNC(lkgpo2, FLOCKR1, 8, 9) \ FUNC(nprd_smi, FLOCKR1, 20, 190) \ FUNC(mmcwp, FLOCKR1, 24, 153) \ + FUNC(vcdhs, INTCR, 27) \ FUNC(rg2refck, INTCR4, 6) \ FUNC(r1en, INTCR4, 12) \ FUNC(r2en, INTCR4, 13) \ |