This patch add function used to get the child count of a ofnode or a device

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v3: 1. add non/inline function dev_get_child_count() instead of macro suggested by Simon

v2: 1. move ofnode_get_child_count() into ofnode.c suggested by Simon 2. add a new macro dev_get_child_count() --- drivers/core/ofnode.c | 11 +++++++++++ drivers/core/read.c | 5 +++++ include/dm/ofnode.h | 8 ++++++++ include/dm/read.h | 13 +++++++++++++ 4 files changed, 37 insertions(+)

diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 96a5dd20bd..6f4eb422a4 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -453,6 +453,17 @@ ofnode ofnode_get_chosen_node(const char *name) return ofnode_path(prop); }

+int ofnode_get_child_count(ofnode parent) +{ + ofnode child; + int num = 0; + + ofnode_for_each_subnode(child, parent) + num++; + + return num; +} + static int decode_timing_property(ofnode node, const char *name, struct timing_entry *result) { diff --git a/drivers/core/read.c b/drivers/core/read.c index 1f999b1b31..046381f3a8 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -323,3 +323,8 @@ fdt_addr_t dev_read_addr_pci(const struct udevice *dev)

return addr; } + +int dev_get_child_count(const struct udevice *dev) +{ + return ofnode_get_child_count(dev_ofnode(dev)); +} diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index b5a50e8849..0d521dbcf1 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -793,6 +793,14 @@ ofnode ofnode_by_prop_value(ofnode from, const char *propname, ofnode_valid(node); \ node = ofnode_next_subnode(node))

+/** + * ofnode_get_child_count() - get the child count of a ofnode + * + * @node: valid node to get its child count + * @return the number of subnodes + */ +int ofnode_get_child_count(ofnode parent); + /** * ofnode_translate_address() - Translate a device-tree address * diff --git a/include/dm/read.h b/include/dm/read.h index da8c7f25e7..38cf76d07a 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -607,6 +607,14 @@ u64 dev_translate_dma_address(const struct udevice *dev, */ int dev_read_alias_highest_id(const char *stem);

+/** + * dev_get_child_count() - get the child count of a device + * + * @dev: device to use for interation (struct udevice *) + * @return the count of child subnode + */ +int dev_get_child_count(const struct udevice *dev); + #else /* CONFIG_DM_DEV_READ_INLINE is enabled */

static inline int dev_read_u32(const struct udevice *dev, @@ -885,6 +893,11 @@ static inline int dev_read_alias_highest_id(const char *stem) return fdtdec_get_alias_highest_id(gd->fdt_blob, stem); }

+static inline int dev_get_child_count(const struct udevice *dev) +{ + return ofnode_get_child_count(dev_ofnode(dev)); +} + #endif /* CONFIG_DM_DEV_READ_INLINE */

/**

Add a test item for ofnode_get_child_count()

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com Reviewed-by: Simon Glass sjg@chromium.org --- v3: 1. squash dts patch into this one suggested by Simon 2. add reviewed-by Simon

v2: a new patch to test ofnode_get_child_count() suggested by Simon --- arch/sandbox/dts/test.dts | 18 ++++++++++++++++++ test/dm/ofnode.c | 21 +++++++++++++++++++++ 2 files changed, 39 insertions(+)

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 4a277934a7..09e69a9d33 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -202,6 +202,24 @@ compatible = "denx,u-boot-fdt-test1"; };

+ i-test { + compatible = "mediatek,u-boot-fdt-test"; + #address-cells = <1>; + #size-cells = <0>; + + subnode0 { + reg = <0>; + }; + + subnode1 { + reg = <1>; + }; + + subnode2 { + reg = <2>; + }; + }; + devres-test { compatible = "denx,u-boot-devres-test"; }; diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c index 1c49eaf38b..07d5c7d7a6 100644 --- a/test/dm/ofnode.c +++ b/test/dm/ofnode.c @@ -113,3 +113,24 @@ static int dm_test_ofnode_read_chosen(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_ofnode_read_chosen, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +static int dm_test_ofnode_get_child_count(struct unit_test_state *uts) +{ + ofnode node, child_node; + u32 val; + + node = ofnode_path("/i-test"); + ut_assert(ofnode_valid(node)); + + val = ofnode_get_child_count(node); + ut_asserteq(3, val); + + child_node = ofnode_first_subnode(node); + ut_assert(ofnode_valid(child_node)); + val = ofnode_get_child_count(child_node); + ut_asserteq(0, val); + + return 0; +} +DM_TEST(dm_test_ofnode_get_child_count, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);

Support USB2 and USB3 PHY with shared banks when support multi-phys

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v3: no changes

v2: 1. get the count of phys by dev_get_child_count() --- drivers/phy/phy-mtk-tphy.c | 227 +++++++++++++++++++++++++++++++++++-- 1 file changed, 218 insertions(+), 9 deletions(-)

diff --git a/drivers/phy/phy-mtk-tphy.c b/drivers/phy/phy-mtk-tphy.c index bd089b7a43..71bc706c6e 100644 --- a/drivers/phy/phy-mtk-tphy.c +++ b/drivers/phy/phy-mtk-tphy.c @@ -20,11 +20,66 @@ /* version V1 sub-banks offset base address */ /* banks shared by multiple phys */ #define SSUSB_SIFSLV_V1_SPLLC 0x000 /* shared by u3 phys */ +#define SSUSB_SIFSLV_V1_U2FREQ 0x100 /* shared by u2 phys */ #define SSUSB_SIFSLV_V1_CHIP 0x300 /* shared by u3 phys */ +/* u2 phy bank */ +#define SSUSB_SIFSLV_V1_U2PHY_COM 0x000 /* u3/pcie/sata phy banks */ #define SSUSB_SIFSLV_V1_U3PHYD 0x000 #define SSUSB_SIFSLV_V1_U3PHYA 0x200

+#define U3P_USBPHYACR0 0x000 +#define PA0_RG_U2PLL_FORCE_ON BIT(15) +#define PA0_RG_USB20_INTR_EN BIT(5) + +#define U3P_USBPHYACR5 0x014 +#define PA5_RG_U2_HSTX_SRCAL_EN BIT(15) +#define PA5_RG_U2_HSTX_SRCTRL GENMASK(14, 12) +#define PA5_RG_U2_HSTX_SRCTRL_VAL(x) ((0x7 & (x)) << 12) +#define PA5_RG_U2_HS_100U_U3_EN BIT(11) + +#define U3P_USBPHYACR6 0x018 +#define PA6_RG_U2_BC11_SW_EN BIT(23) +#define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20) +#define PA6_RG_U2_SQTH GENMASK(3, 0) +#define PA6_RG_U2_SQTH_VAL(x) (0xf & (x)) + +#define U3P_U2PHYACR4 0x020 +#define P2C_RG_USB20_GPIO_CTL BIT(9) +#define P2C_USB20_GPIO_MODE BIT(8) +#define P2C_U2_GPIO_CTR_MSK \ + (P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE) + +#define U3P_U2PHYDTM0 0x068 +#define P2C_FORCE_UART_EN BIT(26) +#define P2C_FORCE_DATAIN BIT(23) +#define P2C_FORCE_DM_PULLDOWN BIT(21) +#define P2C_FORCE_DP_PULLDOWN BIT(20) +#define P2C_FORCE_XCVRSEL BIT(19) +#define P2C_FORCE_SUSPENDM BIT(18) +#define P2C_FORCE_TERMSEL BIT(17) +#define P2C_RG_DATAIN GENMASK(13, 10) +#define P2C_RG_DATAIN_VAL(x) ((0xf & (x)) << 10) +#define P2C_RG_DMPULLDOWN BIT(7) +#define P2C_RG_DPPULLDOWN BIT(6) +#define P2C_RG_XCVRSEL GENMASK(5, 4) +#define P2C_RG_XCVRSEL_VAL(x) ((0x3 & (x)) << 4) +#define P2C_RG_SUSPENDM BIT(3) +#define P2C_RG_TERMSEL BIT(2) +#define P2C_DTM0_PART_MASK \ + (P2C_FORCE_DATAIN | P2C_FORCE_DM_PULLDOWN | \ + P2C_FORCE_DP_PULLDOWN | P2C_FORCE_XCVRSEL | \ + P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \ + P2C_RG_DPPULLDOWN | P2C_RG_TERMSEL) + +#define U3P_U2PHYDTM1 0x06C +#define P2C_RG_UART_EN BIT(16) +#define P2C_FORCE_IDDIG BIT(9) +#define P2C_RG_VBUSVALID BIT(5) +#define P2C_RG_SESSEND BIT(4) +#define P2C_RG_AVALID BIT(2) +#define P2C_RG_IDDIG BIT(1) + #define U3P_U3_CHIP_GPIO_CTLD 0x0c #define P3C_REG_IP_SW_RST BIT(31) #define P3C_MCU_BUS_CK_GATE_EN BIT(30) @@ -42,6 +97,14 @@ #define P3A_RG_CLKDRV_AMP GENMASK(31, 29) #define P3A_RG_CLKDRV_AMP_VAL(x) ((0x7 & (x)) << 29)

+#define U3P_U3_PHYA_REG6 0x018 +#define P3A_RG_TX_EIDLE_CM GENMASK(31, 28) +#define P3A_RG_TX_EIDLE_CM_VAL(x) ((0xf & (x)) << 28) + +#define U3P_U3_PHYA_REG9 0x024 +#define P3A_RG_RX_DAC_MUX GENMASK(5, 1) +#define P3A_RG_RX_DAC_MUX_VAL(x) ((0x1f & (x)) << 1) + #define U3P_U3_PHYA_DA_REG0 0x100 #define P3A_RG_XTAL_EXT_PE2H GENMASK(17, 16) #define P3A_RG_XTAL_EXT_PE2H_VAL(x) ((0x3 & (x)) << 16) @@ -77,6 +140,16 @@ #define P3A_RG_PLL_DELTA_PE2H GENMASK(15, 0) #define P3A_RG_PLL_DELTA_PE2H_VAL(x) (0xffff & (x))

+#define U3P_U3_PHYD_LFPS1 0x00c +#define P3D_RG_FWAKE_TH GENMASK(21, 16) +#define P3D_RG_FWAKE_TH_VAL(x) ((0x3f & (x)) << 16) + +#define U3P_U3_PHYD_CDR1 0x05c +#define P3D_RG_CDR_BIR_LTD1 GENMASK(28, 24) +#define P3D_RG_CDR_BIR_LTD1_VAL(x) ((0x1f & (x)) << 24) +#define P3D_RG_CDR_BIR_LTD0 GENMASK(12, 8) +#define P3D_RG_CDR_BIR_LTD0_VAL(x) ((0x1f & (x)) << 8) + #define U3P_U3_PHYD_RXDET1 0x128 #define P3D_RG_RXDET_STB2_SET GENMASK(17, 9) #define P3D_RG_RXDET_STB2_SET_VAL(x) ((0x1ff & (x)) << 9) @@ -85,6 +158,16 @@ #define P3D_RG_RXDET_STB2_SET_P3 GENMASK(8, 0) #define P3D_RG_RXDET_STB2_SET_P3_VAL(x) (0x1ff & (x))

+#define U3P_SPLLC_XTALCTL3 0x018 +#define XC3_RG_U3_XTAL_RX_PWD BIT(9) +#define XC3_RG_U3_FRC_XTAL_RX_PWD BIT(8) + +struct u2phy_banks { + void __iomem *misc; + void __iomem *fmreg; + void __iomem *com; +}; + struct u3phy_banks { void __iomem *spllc; void __iomem *chip; @@ -95,21 +178,127 @@ struct u3phy_banks { struct mtk_phy_instance { void __iomem *port_base; const struct device_node *np; - - struct u3phy_banks u3_banks; + union { + struct u2phy_banks u2_banks; + struct u3phy_banks u3_banks; + };

/* reference clock of anolog phy */ struct clk ref_clk; u32 index; - u8 type; + u32 type; };

struct mtk_tphy { + struct udevice *dev; void __iomem *sif_base; struct mtk_phy_instance **phys; int nphys; };

+static void u2_phy_instance_init(struct mtk_tphy *tphy, + struct mtk_phy_instance *instance) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + + /* switch to USB function, and enable usb pll */ + clrsetbits_le32(u2_banks->com + U3P_U2PHYDTM0, + P2C_FORCE_UART_EN | P2C_FORCE_SUSPENDM, + P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0)); + + clrbits_le32(u2_banks->com + U3P_U2PHYDTM1, P2C_RG_UART_EN); + setbits_le32(u2_banks->com + U3P_USBPHYACR0, PA0_RG_USB20_INTR_EN); + + /* disable switch 100uA current to SSUSB */ + clrbits_le32(u2_banks->com + U3P_USBPHYACR5, PA5_RG_U2_HS_100U_U3_EN); + + clrbits_le32(u2_banks->com + U3P_U2PHYACR4, P2C_U2_GPIO_CTR_MSK); + + /* DP/DM BC1.1 path Disable */ + clrsetbits_le32(u2_banks->com + U3P_USBPHYACR6, + PA6_RG_U2_BC11_SW_EN | PA6_RG_U2_SQTH, + PA6_RG_U2_SQTH_VAL(2)); + + /* set HS slew rate */ + clrsetbits_le32(u2_banks->com + U3P_USBPHYACR5, + PA5_RG_U2_HSTX_SRCTRL, PA5_RG_U2_HSTX_SRCTRL_VAL(4)); + + dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index); +} + +static void u2_phy_instance_power_on(struct mtk_tphy *tphy, + struct mtk_phy_instance *instance) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + + clrbits_le32(u2_banks->com + U3P_U2PHYDTM0, + P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK); + + /* OTG Enable */ + setbits_le32(u2_banks->com + U3P_USBPHYACR6, + PA6_RG_U2_OTG_VBUSCMP_EN); + + clrsetbits_le32(u2_banks->com + U3P_U2PHYDTM1, + P2C_RG_SESSEND, P2C_RG_VBUSVALID | P2C_RG_AVALID); + + dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index); +} + +static void u2_phy_instance_power_off(struct mtk_tphy *tphy, + struct mtk_phy_instance *instance) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + + clrbits_le32(u2_banks->com + U3P_U2PHYDTM0, + P2C_RG_XCVRSEL | P2C_RG_DATAIN); + + /* OTG Disable */ + clrbits_le32(u2_banks->com + U3P_USBPHYACR6, + PA6_RG_U2_OTG_VBUSCMP_EN); + + clrsetbits_le32(u2_banks->com + U3P_U2PHYDTM1, + P2C_RG_VBUSVALID | P2C_RG_AVALID, P2C_RG_SESSEND); + + dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index); +} + +static void u3_phy_instance_init(struct mtk_tphy *tphy, + struct mtk_phy_instance *instance) +{ + struct u3phy_banks *u3_banks = &instance->u3_banks; + + /* gating PCIe Analog XTAL clock */ + setbits_le32(u3_banks->spllc + U3P_SPLLC_XTALCTL3, + XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD); + + /* gating XSQ */ + clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG0, + P3A_RG_XTAL_EXT_EN_U3, P3A_RG_XTAL_EXT_EN_U3_VAL(2)); + + clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG9, + P3A_RG_RX_DAC_MUX, P3A_RG_RX_DAC_MUX_VAL(4)); + + clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG6, + P3A_RG_TX_EIDLE_CM, P3A_RG_TX_EIDLE_CM_VAL(0xe)); + + clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_CDR1, + P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1, + P3D_RG_CDR_BIR_LTD0_VAL(0xc) | + P3D_RG_CDR_BIR_LTD1_VAL(0x3)); + + clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_LFPS1, + P3D_RG_FWAKE_TH, P3D_RG_FWAKE_TH_VAL(0x34)); + + clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET1, + P3D_RG_RXDET_STB2_SET, P3D_RG_RXDET_STB2_SET_VAL(0x10)); + + clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET2, + P3D_RG_RXDET_STB2_SET_P3, + P3D_RG_RXDET_STB2_SET_P3_VAL(0x10)); + + dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index); +} + static void pcie_phy_instance_init(struct mtk_tphy *tphy, struct mtk_phy_instance *instance) { @@ -187,9 +376,16 @@ static void pcie_phy_instance_power_off(struct mtk_tphy *tphy, static void phy_v1_banks_init(struct mtk_tphy *tphy, struct mtk_phy_instance *instance) { + struct u2phy_banks *u2_banks = &instance->u2_banks; struct u3phy_banks *u3_banks = &instance->u3_banks;

switch (instance->type) { + case PHY_TYPE_USB2: + u2_banks->misc = NULL; + u2_banks->fmreg = tphy->sif_base + SSUSB_SIFSLV_V1_U2FREQ; + u2_banks->com = instance->port_base + SSUSB_SIFSLV_V1_U2PHY_COM; + break; + case PHY_TYPE_USB3: case PHY_TYPE_PCIE: u3_banks->spllc = tphy->sif_base + SSUSB_SIFSLV_V1_SPLLC; u3_banks->chip = tphy->sif_base + SSUSB_SIFSLV_V1_CHIP; @@ -197,6 +393,7 @@ static void phy_v1_banks_init(struct mtk_tphy *tphy, u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V1_U3PHYA; break; default: + dev_err(tphy->dev, "incompatible PHY type\n"); return; } } @@ -212,10 +409,17 @@ static int mtk_phy_init(struct phy *phy) return ret;

switch (instance->type) { + case PHY_TYPE_USB2: + u2_phy_instance_init(tphy, instance); + break; + case PHY_TYPE_USB3: + u3_phy_instance_init(tphy, instance); + break; case PHY_TYPE_PCIE: pcie_phy_instance_init(tphy, instance); break; default: + dev_err(tphy->dev, "incompatible PHY type\n"); return -EINVAL; }

@@ -227,7 +431,10 @@ static int mtk_phy_power_on(struct phy *phy) struct mtk_tphy *tphy = dev_get_priv(phy->dev); struct mtk_phy_instance *instance = tphy->phys[phy->id];

- pcie_phy_instance_power_on(tphy, instance); + if (instance->type == PHY_TYPE_USB2) + u2_phy_instance_power_on(tphy, instance); + else if (instance->type == PHY_TYPE_PCIE) + pcie_phy_instance_power_on(tphy, instance);

return 0; } @@ -237,7 +444,10 @@ static int mtk_phy_power_off(struct phy *phy) struct mtk_tphy *tphy = dev_get_priv(phy->dev); struct mtk_phy_instance *instance = tphy->phys[phy->id];

- pcie_phy_instance_power_off(tphy, instance); + if (instance->type == PHY_TYPE_USB2) + u2_phy_instance_power_off(tphy, instance); + else if (instance->type == PHY_TYPE_PCIE) + pcie_phy_instance_power_off(tphy, instance);

return 0; } @@ -285,8 +495,7 @@ static int mtk_phy_xlate(struct phy *phy, instance->type = args->args[1]; if (!(instance->type == PHY_TYPE_USB2 || instance->type == PHY_TYPE_USB3 || - instance->type == PHY_TYPE_PCIE || - instance->type == PHY_TYPE_SATA)) { + instance->type == PHY_TYPE_PCIE)) { dev_err(phy->dev, "unsupported device type\n"); return -EINVAL; } @@ -310,14 +519,14 @@ static int mtk_tphy_probe(struct udevice *dev) ofnode subnode; int index = 0;

- dev_for_each_subnode(subnode, dev) - tphy->nphys++; + tphy->nphys = dev_get_child_count(dev);

tphy->phys = devm_kcalloc(dev, tphy->nphys, sizeof(*tphy->phys), GFP_KERNEL); if (!tphy->phys) return -ENOMEM;

+ tphy->dev = dev; tphy->sif_base = dev_read_addr_ptr(dev); if (!tphy->sif_base) return -ENOENT;

The new version removes all shared banks between multi-phys

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v2~v3: no changes --- drivers/phy/phy-mtk-tphy.c | 68 +++++++++++++++++++++++++++++++++++--- 1 file changed, 63 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/phy-mtk-tphy.c b/drivers/phy/phy-mtk-tphy.c index 71bc706c6e..20167fe7cb 100644 --- a/drivers/phy/phy-mtk-tphy.c +++ b/drivers/phy/phy-mtk-tphy.c @@ -28,6 +28,17 @@ #define SSUSB_SIFSLV_V1_U3PHYD 0x000 #define SSUSB_SIFSLV_V1_U3PHYA 0x200

+/* version V2 sub-banks offset base address */ +/* u2 phy banks */ +#define SSUSB_SIFSLV_V2_MISC 0x000 +#define SSUSB_SIFSLV_V2_U2FREQ 0x100 +#define SSUSB_SIFSLV_V2_U2PHY_COM 0x300 +/* u3/pcie/sata phy banks */ +#define SSUSB_SIFSLV_V2_SPLLC 0x000 +#define SSUSB_SIFSLV_V2_CHIP 0x100 +#define SSUSB_SIFSLV_V2_U3PHYD 0x200 +#define SSUSB_SIFSLV_V2_U3PHYA 0x400 + #define U3P_USBPHYACR0 0x000 #define PA0_RG_U2PLL_FORCE_ON BIT(15) #define PA0_RG_USB20_INTR_EN BIT(5) @@ -162,6 +173,11 @@ #define XC3_RG_U3_XTAL_RX_PWD BIT(9) #define XC3_RG_U3_FRC_XTAL_RX_PWD BIT(8)

+enum mtk_phy_version { + MTK_TPHY_V1 = 1, + MTK_TPHY_V2, +}; + struct u2phy_banks { void __iomem *misc; void __iomem *fmreg; @@ -192,6 +208,7 @@ struct mtk_phy_instance { struct mtk_tphy { struct udevice *dev; void __iomem *sif_base; + enum mtk_phy_version version; struct mtk_phy_instance **phys; int nphys; }; @@ -304,6 +321,9 @@ static void pcie_phy_instance_init(struct mtk_tphy *tphy, { struct u3phy_banks *u3_banks = &instance->u3_banks;

+ if (tphy->version != MTK_TPHY_V1) + return; + clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG0, P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H, P3A_RG_XTAL_EXT_PE1H_VAL(0x2) | @@ -398,6 +418,31 @@ static void phy_v1_banks_init(struct mtk_tphy *tphy, } }

+static void phy_v2_banks_init(struct mtk_tphy *tphy, + struct mtk_phy_instance *instance) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + struct u3phy_banks *u3_banks = &instance->u3_banks; + + switch (instance->type) { + case PHY_TYPE_USB2: + u2_banks->misc = instance->port_base + SSUSB_SIFSLV_V2_MISC; + u2_banks->fmreg = instance->port_base + SSUSB_SIFSLV_V2_U2FREQ; + u2_banks->com = instance->port_base + SSUSB_SIFSLV_V2_U2PHY_COM; + break; + case PHY_TYPE_USB3: + case PHY_TYPE_PCIE: + u3_banks->spllc = instance->port_base + SSUSB_SIFSLV_V2_SPLLC; + u3_banks->chip = instance->port_base + SSUSB_SIFSLV_V2_CHIP; + u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V2_U3PHYD; + u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V2_U3PHYA; + break; + default: + dev_err(tphy->dev, "incompatible PHY type\n"); + return; + } +} + static int mtk_phy_init(struct phy *phy) { struct mtk_tphy *tphy = dev_get_priv(phy->dev); @@ -500,7 +545,14 @@ static int mtk_phy_xlate(struct phy *phy, return -EINVAL; }

- phy_v1_banks_init(tphy, instance); + if (tphy->version == MTK_TPHY_V1) { + phy_v1_banks_init(tphy, instance); + } else if (tphy->version == MTK_TPHY_V2) { + phy_v2_banks_init(tphy, instance); + } else { + dev_err(phy->dev, "phy version is not supported\n"); + return -EINVAL; + }

return 0; } @@ -527,9 +579,14 @@ static int mtk_tphy_probe(struct udevice *dev) return -ENOMEM;

tphy->dev = dev; - tphy->sif_base = dev_read_addr_ptr(dev); - if (!tphy->sif_base) - return -ENOENT; + tphy->version = dev_get_driver_data(dev); + + /* v1 has shared banks */ + if (tphy->version == MTK_TPHY_V1) { + tphy->sif_base = dev_read_addr_ptr(dev); + if (!tphy->sif_base) + return -ENOENT; + }

dev_for_each_subnode(subnode, dev) { struct mtk_phy_instance *instance; @@ -560,7 +617,8 @@ static int mtk_tphy_probe(struct udevice *dev) }

static const struct udevice_id mtk_tphy_id_table[] = { - { .compatible = "mediatek,generic-tphy-v1", }, + { .compatible = "mediatek,generic-tphy-v1", .data = MTK_TPHY_V1, }, + { .compatible = "mediatek,generic-tphy-v2", .data = MTK_TPHY_V2, }, { } };

Usually the digital and analog phys use the same reference clock, but some platforms have two separate reference clocks for each of them, so add another optional clock to support them. In order to keep the clock names consistent with PHY IP's, change the da_ref for analog phy and ref clock for digital phy.

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v2~v3: no changes --- drivers/phy/phy-mtk-tphy.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/phy-mtk-tphy.c b/drivers/phy/phy-mtk-tphy.c index 20167fe7cb..81525a48b7 100644 --- a/drivers/phy/phy-mtk-tphy.c +++ b/drivers/phy/phy-mtk-tphy.c @@ -199,8 +199,8 @@ struct mtk_phy_instance { struct u3phy_banks u3_banks; };

- /* reference clock of anolog phy */ - struct clk ref_clk; + struct clk ref_clk; /* reference clock of (digital) phy */ + struct clk da_ref_clk; /* reference clock of analog phy */ u32 index; u32 type; }; @@ -450,8 +450,17 @@ static int mtk_phy_init(struct phy *phy) int ret;

ret = clk_enable(&instance->ref_clk); - if (ret) + if (ret < 0) { + dev_err(tphy->dev, "failed to enable ref_clk\n"); return ret; + } + + ret = clk_enable(&instance->da_ref_clk); + if (ret < 0) { + dev_err(tphy->dev, "failed to enable da_ref_clk %d\n", ret); + clk_disable(&instance->ref_clk); + return ret; + }

switch (instance->type) { case PHY_TYPE_USB2: @@ -502,6 +511,7 @@ static int mtk_phy_exit(struct phy *phy) struct mtk_tphy *tphy = dev_get_priv(phy->dev); struct mtk_phy_instance *instance = tphy->phys[phy->id];

+ clk_disable(&instance->da_ref_clk); clk_disable(&instance->ref_clk);

return 0; @@ -611,6 +621,11 @@ static int mtk_tphy_probe(struct udevice *dev) &instance->ref_clk); if (err) return err; + + err = clk_get_optional_nodev(subnode, "da_ref", + &instance->da_ref_clk); + if (err) + return err; }

return 0;

This patch is used to support the on-chip xHCI controller on MediaTek SoCs, currently only control/bulk transfers are supported.

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v3: use macro approach to access registers suggested by Marek

v2: 1. use clk_bulk to get clocks suggested by Marek 2. use clrsetbits_le32() etc suggeseted by Marek --- drivers/usb/host/Kconfig | 6 + drivers/usb/host/Makefile | 1 + drivers/usb/host/xhci-mtk.c | 364 ++++++++++++++++++++++++++++++++++++ 3 files changed, 371 insertions(+) create mode 100644 drivers/usb/host/xhci-mtk.c

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 0987ff25b1..931af268f4 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -30,6 +30,12 @@ config USB_XHCI_DWC3_OF_SIMPLE Support USB2/3 functionality in simple SoC integrations with USB controller based on the DesignWare USB3 IP Core.

+config USB_XHCI_MTK + bool "Support for MediaTek on-chip xHCI USB controller" + depends on ARCH_MEDIATEK + help + Enables support for the on-chip xHCI controller on MediaTek SoCs. + config USB_XHCI_MVEBU bool "MVEBU USB 3.0 support" default y diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 7feeff679c..104821f188 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -50,6 +50,7 @@ obj-$(CONFIG_USB_XHCI_DWC3_OF_SIMPLE) += dwc3-of-simple.o obj-$(CONFIG_USB_XHCI_ROCKCHIP) += xhci-rockchip.o obj-$(CONFIG_USB_XHCI_EXYNOS) += xhci-exynos5.o obj-$(CONFIG_USB_XHCI_FSL) += xhci-fsl.o +obj-$(CONFIG_USB_XHCI_MTK) += xhci-mtk.o obj-$(CONFIG_USB_XHCI_MVEBU) += xhci-mvebu.o obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c new file mode 100644 index 0000000000..052786cb7d --- /dev/null +++ b/drivers/usb/host/xhci-mtk.c @@ -0,0 +1,364 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019 MediaTek, Inc. + * Authors: Chunfeng Yun chunfeng.yun@mediatek.com + */ + +#include <clk.h> +#include <common.h> +#include <dm.h> +#include <dm/devres.h> +#include <generic-phy.h> +#include <malloc.h> +#include <usb.h> +#include <linux/errno.h> +#include <linux/compat.h> +#include <power/regulator.h> +#include <linux/iopoll.h> + +#include <usb/xhci.h> + +/* IPPC (IP Port Control) registers */ +#define IPPC_IP_PW_CTRL0 0x00 +#define CTRL0_IP_SW_RST BIT(0) + +#define IPPC_IP_PW_CTRL1 0x04 +#define CTRL1_IP_HOST_PDN BIT(0) + +#define IPPC_IP_PW_STS1 0x10 +#define STS1_IP_SLEEP_STS BIT(30) +#define STS1_U3_MAC_RST BIT(16) +#define STS1_XHCI_RST BIT(11) +#define STS1_SYS125_RST BIT(10) +#define STS1_REF_RST BIT(8) +#define STS1_SYSPLL_STABLE BIT(0) + +#define IPPC_IP_XHCI_CAP 0x24 +#define CAP_U3_PORT_NUM(p) ((p) & 0xff) +#define CAP_U2_PORT_NUM(p) (((p) >> 8) & 0xff) + +#define IPPC_U3_CTRL_0P 0x30 +#define CTRL_U3_PORT_HOST_SEL BIT(2) +#define CTRL_U3_PORT_PDN BIT(1) +#define CTRL_U3_PORT_DIS BIT(0) + +#define IPPC_U2_CTRL_0P 0x50 +#define CTRL_U2_PORT_HOST_SEL BIT(2) +#define CTRL_U2_PORT_PDN BIT(1) +#define CTRL_U2_PORT_DIS BIT(0) + +#define IPPC_U3_CTRL(p) (IPPC_U3_CTRL_0P + ((p) * 0x08)) +#define IPPC_U2_CTRL(p) (IPPC_U2_CTRL_0P + ((p) * 0x08)) + +struct mtk_xhci { + struct xhci_ctrl ctrl; /* Needs to come first in this struct! */ + struct xhci_hccr *hcd; + void __iomem *ippc; + struct udevice *dev; + struct udevice *vusb33_supply; + struct udevice *vbus_supply; + struct clk_bulk clks; + int num_u2ports; + int num_u3ports; + struct phy *phys; + int num_phys; +}; + +static int xhci_mtk_host_enable(struct mtk_xhci *mtk) +{ + u32 value; + u32 check_val; + int ret; + int i; + + /* power on host ip */ + clrbits_le32(mtk->ippc + IPPC_IP_PW_CTRL1, CTRL1_IP_HOST_PDN); + + /* power on and enable all u3 ports */ + for (i = 0; i < mtk->num_u3ports; i++) { + clrsetbits_le32(mtk->ippc + IPPC_U3_CTRL(i), + CTRL_U3_PORT_PDN | CTRL_U3_PORT_DIS, + CTRL_U3_PORT_HOST_SEL); + } + + /* power on and enable all u2 ports */ + for (i = 0; i < mtk->num_u2ports; i++) { + clrsetbits_le32(mtk->ippc + IPPC_U2_CTRL(i), + CTRL_U2_PORT_PDN | CTRL_U2_PORT_DIS, + CTRL_U2_PORT_HOST_SEL); + } + + /* + * wait for clocks to be stable, and clock domains reset to + * be inactive after power on and enable ports + */ + check_val = STS1_SYSPLL_STABLE | STS1_REF_RST | + STS1_SYS125_RST | STS1_XHCI_RST; + + if (mtk->num_u3ports) + check_val |= STS1_U3_MAC_RST; + + ret = readl_poll_timeout(mtk->ippc + IPPC_IP_PW_STS1, value, + (check_val == (value & check_val)), 20000); + if (ret) + dev_err(mtk->dev, "clocks are not stable (0x%x)\n", value); + + return ret; +} + +static int xhci_mtk_host_disable(struct mtk_xhci *mtk) +{ + int i; + + /* power down all u3 ports */ + for (i = 0; i < mtk->num_u3ports; i++) + setbits_le32(mtk->ippc + IPPC_U3_CTRL(i), CTRL_U3_PORT_PDN); + + /* power down all u2 ports */ + for (i = 0; i < mtk->num_u2ports; i++) + setbits_le32(mtk->ippc + IPPC_U2_CTRL(i), CTRL_U2_PORT_PDN); + + /* power down host ip */ + setbits_le32(mtk->ippc + IPPC_IP_PW_CTRL1, CTRL1_IP_HOST_PDN); + + return 0; +} + +static int xhci_mtk_ssusb_init(struct mtk_xhci *mtk) +{ + u32 value; + + /* reset whole ip */ + setbits_le32(mtk->ippc + IPPC_IP_PW_CTRL0, CTRL0_IP_SW_RST); + udelay(1); + clrbits_le32(mtk->ippc + IPPC_IP_PW_CTRL0, CTRL0_IP_SW_RST); + + value = readl(mtk->ippc + IPPC_IP_XHCI_CAP); + mtk->num_u3ports = CAP_U3_PORT_NUM(value); + mtk->num_u2ports = CAP_U2_PORT_NUM(value); + dev_info(mtk->dev, "%s u2p:%d, u3p:%d\n", __func__, + mtk->num_u2ports, mtk->num_u3ports); + + return xhci_mtk_host_enable(mtk); +} + +static int xhci_mtk_ofdata_get(struct mtk_xhci *mtk) +{ + struct udevice *dev = mtk->dev; + int ret = 0; + + mtk->hcd = devfdt_remap_addr_name(dev, "mac"); + if (!mtk->hcd) { + dev_err(dev, "Failed to get xHCI base address\n"); + return -ENXIO; + } + + mtk->ippc = devfdt_remap_addr_name(dev, "ippc"); + if (!mtk->ippc) { + dev_err(dev, "Failed to get IPPC base address\n"); + return -ENXIO; + } + + dev_info(dev, "hcd: 0x%p, ippc: 0x%p\n", mtk->hcd, mtk->ippc); + + ret = clk_get_bulk(dev, &mtk->clks); + if (ret) { + dev_err(dev, "Failed to get clocks\n"); + return ret; + } + + ret = device_get_supply_regulator(dev, "vusb33-supply", + &mtk->vusb33_supply); + if (ret) + debug("Can't get vusb33 regulator! %d\n", ret); + + ret = device_get_supply_regulator(dev, "vbus-supply", + &mtk->vbus_supply); + if (ret) + debug("Can't get vbus regulator! %d\n", ret); + + return 0; +} + +static int xhci_mtk_ldos_enable(struct mtk_xhci *mtk) +{ + int ret; + + ret = regulator_set_enable(mtk->vusb33_supply, true); + if (ret < 0 && ret != -ENOSYS) { + dev_err(mtk->dev, "failed to enable vusb33\n"); + return ret; + } + + ret = regulator_set_enable(mtk->vbus_supply, true); + if (ret < 0 && ret != -ENOSYS) { + dev_err(mtk->dev, "failed to enable vbus\n"); + regulator_set_enable(mtk->vusb33_supply, false); + return ret; + } + + return 0; +} + +static void xhci_mtk_ldos_disable(struct mtk_xhci *mtk) +{ + regulator_set_enable(mtk->vbus_supply, false); + regulator_set_enable(mtk->vusb33_supply, false); +} + +int xhci_mtk_phy_setup(struct mtk_xhci *mtk) +{ + struct udevice *dev = mtk->dev; + struct phy *usb_phys; + int i, ret, count; + + /* Return if no phy declared */ + if (!dev_read_prop(dev, "phys", NULL)) + return 0; + + count = dev_count_phandle_with_args(dev, "phys", "#phy-cells"); + if (count <= 0) + return count; + + usb_phys = devm_kcalloc(dev, count, sizeof(*usb_phys), GFP_KERNEL); + if (!usb_phys) + return -ENOMEM; + + for (i = 0; i < count; i++) { + ret = generic_phy_get_by_index(dev, i, &usb_phys[i]); + if (ret && ret != -ENOENT) { + dev_err(dev, "Failed to get USB PHY%d for %s\n", + i, dev->name); + return ret; + } + } + + for (i = 0; i < count; i++) { + ret = generic_phy_init(&usb_phys[i]); + if (ret) { + dev_err(dev, "Can't init USB PHY%d for %s\n", + i, dev->name); + goto phys_init_err; + } + } + + for (i = 0; i < count; i++) { + ret = generic_phy_power_on(&usb_phys[i]); + if (ret) { + dev_err(dev, "Can't power USB PHY%d for %s\n", + i, dev->name); + goto phys_poweron_err; + } + } + + mtk->phys = usb_phys; + mtk->num_phys = count; + + return 0; + +phys_poweron_err: + for (i = count - 1; i >= 0; i--) + generic_phy_power_off(&usb_phys[i]); + + for (i = 0; i < count; i++) + generic_phy_exit(&usb_phys[i]); + + return ret; + +phys_init_err: + for (; i >= 0; i--) + generic_phy_exit(&usb_phys[i]); + + return ret; +} + +void xhci_mtk_phy_shutdown(struct mtk_xhci *mtk) +{ + struct udevice *dev = mtk->dev; + struct phy *usb_phys; + int i, ret; + + usb_phys = mtk->phys; + for (i = 0; i < mtk->num_phys; i++) { + if (!generic_phy_valid(&usb_phys[i])) + continue; + + ret = generic_phy_power_off(&usb_phys[i]); + ret |= generic_phy_exit(&usb_phys[i]); + if (ret) { + dev_err(dev, "Can't shutdown USB PHY%d for %s\n", + i, dev->name); + } + } +} + +static int xhci_mtk_probe(struct udevice *dev) +{ + struct mtk_xhci *mtk = dev_get_priv(dev); + struct xhci_hcor *hcor; + int ret; + + mtk->dev = dev; + ret = xhci_mtk_ofdata_get(mtk); + if (ret) + return ret; + + ret = xhci_mtk_ldos_enable(mtk); + if (ret) + goto ldos_err; + + ret = clk_enable_bulk(&mtk->clks); + if (ret) + goto clks_err; + + ret = xhci_mtk_phy_setup(mtk); + if (ret) + goto phys_err; + + ret = xhci_mtk_ssusb_init(mtk); + if (ret) + goto ssusb_init_err; + + hcor = (struct xhci_hcor *)((uintptr_t)mtk->hcd + + HC_LENGTH(xhci_readl(&mtk->hcd->cr_capbase))); + + return xhci_register(dev, mtk->hcd, hcor); + +ssusb_init_err: + xhci_mtk_phy_shutdown(mtk); +phys_err: + clk_disable_bulk(&mtk->clks); +clks_err: + xhci_mtk_ldos_disable(mtk); +ldos_err: + return ret; +} + +static int xhci_mtk_remove(struct udevice *dev) +{ + struct mtk_xhci *mtk = dev_get_priv(dev); + + xhci_deregister(dev); + xhci_mtk_host_disable(mtk); + xhci_mtk_ldos_disable(mtk); + clk_disable_bulk(&mtk->clks); + + return 0; +} + +static const struct udevice_id xhci_mtk_ids[] = { + { .compatible = "mediatek,mtk-xhci" }, + { } +}; + +U_BOOT_DRIVER(usb_xhci) = { + .name = "xhci-mtk", + .id = UCLASS_USB, + .of_match = xhci_mtk_ids, + .probe = xhci_mtk_probe, + .remove = xhci_mtk_remove, + .ops = &xhci_usb_ops, + .bind = dm_scan_fdt_dev, + .priv_auto_alloc_size = sizeof(struct mtk_xhci), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +};

Add usb, phy and clock nodes

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v3: no changes

v2: 1. remove fixed clock clk20m --- arch/arm/dts/mt7629-rfb.dts | 8 ++++++++ arch/arm/dts/mt7629.dtsi | 41 +++++++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+)

diff --git a/arch/arm/dts/mt7629-rfb.dts b/arch/arm/dts/mt7629-rfb.dts index 687fe1c029..bf84f76344 100644 --- a/arch/arm/dts/mt7629-rfb.dts +++ b/arch/arm/dts/mt7629-rfb.dts @@ -82,6 +82,14 @@ status = "okay"; };

+&xhci { + status = "okay"; +}; + +&u3phy { + status = "okay"; +}; + &watchdog { pinctrl-names = "default"; pinctrl-0 = <&watchdog_pins>; diff --git a/arch/arm/dts/mt7629.dtsi b/arch/arm/dts/mt7629.dtsi index a33a74a556..d1c99c5d6a 100644 --- a/arch/arm/dts/mt7629.dtsi +++ b/arch/arm/dts/mt7629.dtsi @@ -11,6 +11,7 @@ #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/power/mt7629-power.h> #include <dt-bindings/reset/mt7629-reset.h> +#include <dt-bindings/phy/phy.h> #include "skeleton.dtsi"

/ { @@ -222,6 +223,46 @@ #size-cells = <0>; };

+ ssusbsys: ssusbsys@1a000000 { + compatible = "mediatek,mt7629-ssusbsys", "syscon"; + reg = <0x1a000000 0x1000>; + #clock-cells = <1>; + }; + + xhci: usb@1a0c0000 { + compatible = "mediatek,mt7629-xhci", "mediatek,mtk-xhci"; + reg = <0x1a0c0000 0x1000>, <0x1a0c3e00 0x0100>; + reg-names = "mac", "ippc"; + power-domains = <&scpsys MT7629_POWER_DOMAIN_HIF1>; + clocks = <&ssusbsys CLK_SSUSB_SYS_EN>, + <&ssusbsys CLK_SSUSB_REF_EN>, + <&ssusbsys CLK_SSUSB_MCU_EN>, + <&ssusbsys CLK_SSUSB_DMA_EN>; + clock-names = "sys_ck", "ref_ck", "mcu_ck", "dma_ck"; + phys = <&u2port0 PHY_TYPE_USB2>, <&u3port0 PHY_TYPE_USB3>; + status = "disabled"; + }; + + u3phy: usb-phy@1a0c4000 { + compatible = "mediatek,mt7629-tphy", "mediatek,generic-tphy-v2"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x1a0c4000 0x1000>; + status = "disabled"; + + u2port0: usb-phy@0 { + reg = <0x0 0x0700>; + #phy-cells = <1>; + clocks = <&ssusbsys CLK_SSUSB_U2_PHY_EN>; + clock-names = "ref"; + }; + + u3port0: usb-phy@700 { + reg = <0x0700 0x0700>; + #phy-cells = <1>; + }; + }; + ethsys: syscon@1b000000 { compatible = "mediatek,mt7629-ethsys", "syscon"; reg = <0x1b000000 0x1000>;

1. add the address mapping related properties; 2. make "ref" clock optional, and add optional clock "da_ref"; 3. add the banks layout of TPHY V1 and V2;

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v2~v3: no changes --- doc/device-tree-bindings/phy/phy-mtk-tphy.txt | 78 ++++++++++++++++--- 1 file changed, 68 insertions(+), 10 deletions(-)

diff --git a/doc/device-tree-bindings/phy/phy-mtk-tphy.txt b/doc/device-tree-bindings/phy/phy-mtk-tphy.txt index 037c5a4be5..8cd23d8c0b 100644 --- a/doc/device-tree-bindings/phy/phy-mtk-tphy.txt +++ b/doc/device-tree-bindings/phy/phy-mtk-tphy.txt @@ -7,10 +7,17 @@ controllers on MediaTek SoCs, such as, USB2.0, USB3.0, PCIe, and SATA. Required properties (controller (parent) node): - compatible : should be one of "mediatek,generic-tphy-v1" - - clocks : (deprecated, use port's clocks instead) a list of phandle + - clock-specifier pairs, one for each entry in clock-names - - clock-names : (deprecated, use port's one instead) must contain - "u3phya_ref": for reference clock of usb3.0 analog phy. + "mediatek,generic-tphy-v2" + +- #address-cells: the number of cells used to represent physical + base addresses. +- #size-cells: the number of cells used to represent the size of an address. +- ranges: the address mapping relationship to the parent, defined with + - empty value: if optional 'reg' is used. + - non-empty value: if optional 'reg' is not used. should set + the child's base address to 0, the physical address + within parent's address space, and the length of + the address map.

Required nodes : a sub-node is required for each port the controller provides. Address range information including the usual @@ -27,12 +34,6 @@ Optional properties (controller (parent) node):

Required properties (port (child) node): - reg : address and length of the register set for the port. -- clocks : a list of phandle + clock-specifier pairs, one for each - entry in clock-names -- clock-names : must contain - "ref": 48M reference clock for HighSpeed analog phy; and 26M - reference clock for SuperSpeed analog phy, sometimes is - 24M, 25M or 27M, depended on platform. - #phy-cells : should be 1 (See second example) cell after port phandle is phy type from: - PHY_TYPE_USB2 @@ -40,6 +41,17 @@ Required properties (port (child) node): - PHY_TYPE_PCIE - PHY_TYPE_SATA

+Optional properties (port (child) node): +- clocks : a list of phandle + clock-specifier pairs, one for each + entry in clock-names +- clock-names : may contain + "ref": 48M reference clock for HighSpeed (digital) phy; and 26M + reference clock for SuperSpeed (digital) phy, sometimes is + 24M, 25M or 27M, depended on platform. + "da_ref": the reference clock of analog phy, used if the clocks + of analog and digital phys are separated, otherwise uses + "ref" clock only if needed. + Example:

u3phy2: usb-phy@1a244000 { @@ -84,3 +96,49 @@ usb30: usb@11270000 { phy-names = "usb2-0", "usb3-0"; ... }; + +Layout differences of banks between TPHY V1 and V2 +------------------------------------------------------------- +IP V1: +port offset bank +shared 0x0000 SPLLC + 0x0100 FMREG +u2 port0 0x0800 U2PHY_COM +u3 port0 0x0900 U3PHYD + 0x0a00 U3PHYD_BANK2 + 0x0b00 U3PHYA + 0x0c00 U3PHYA_DA +u2 port1 0x1000 U2PHY_COM +u3 port1 0x1100 U3PHYD + 0x1200 U3PHYD_BANK2 + 0x1300 U3PHYA + 0x1400 U3PHYA_DA +u2 port2 0x1800 U2PHY_COM + ... + +IP V2: +port offset bank +u2 port0 0x0000 MISC + 0x0100 FMREG + 0x0300 U2PHY_COM +u3 port0 0x0700 SPLLC + 0x0800 CHIP + 0x0900 U3PHYD + 0x0a00 U3PHYD_BANK2 + 0x0b00 U3PHYA + 0x0c00 U3PHYA_DA +u2 port1 0x1000 MISC + 0x1100 FMREG + 0x1300 U2PHY_COM +u3 port1 0x1700 SPLLC + 0x1800 CHIP + 0x1900 U3PHYD + 0x1a00 U3PHYD_BANK2 + 0x1b00 U3PHYA + 0x1c00 U3PHYA_DA +u2 port2 0x2000 MISC + ... + + SPLLC shared by u3 ports and FMREG shared by u2 ports on +TPHY V1 are put back into each port; a new bank MISC for +u2 ports and CHIP for u3 ports are added on TPHY V2.

Add dt-binding for MediaTek xHCI host controller

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v2~v3: no changes --- .../usb/mediatek,mtk-xhci.txt | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt

diff --git a/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt b/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt new file mode 100644 index 0000000000..0447468a2d --- /dev/null +++ b/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt @@ -0,0 +1,40 @@ +MediaTek xHCI + +The device node for USB3 host controller on MediaTek SoCs. + +Required properties: + - compatible : should be "mediatek,mtk-xhci" + - reg : specifies physical base address and size of the registers + - reg-names: should be "mac" for xHCI MAC and "ippc" for IP port control + - power-domains : a phandle to USB power domain node to control USB's + MTCMOS + - vusb33-supply : regulator of USB avdd3.3v + + - clocks : a list of phandle + clock-specifier pairs, one for each + entry in clock-names + - clock-names : must contain + "sys_ck": controller clock used by normal mode, + the following ones are optional: + "ref_ck": reference clock used by low power mode etc, + "mcu_ck": mcu_bus clock for register access, + "dma_ck": dma_bus clock for data transfer by DMA, + "xhci_ck": controller clock + + - phys : list of all the USB PHYs on this HCD + - phy-names: name specifier for the USB PHY + +Optional properties: + - vbus-supply : reference to the VBUS regulator; + +Example: +xhci: usb@1a0c0000 { + compatible = "mediatek,mt7629-xhci", "mediatek,mtk-xhci"; + reg = <0x1a0c0000 0x1000>, <0x1a0c3e00 0x0100>; + reg-names = "mac", "ippc"; + power-domains = <&scpsys MT7629_POWER_DOMAIN_HIF1>; + clocks = <&ssusbsys CLK_SSUSB_SYS_EN>, <&ssusbsys CLK_SSUSB_REF_EN>, + <&ssusbsys CLK_SSUSB_MCU_EN>, <&ssusbsys CLK_SSUSB_DMA_EN>; + clock-names = "sys_ck", "ref_ck", "mcu_ck", "dma_ck"; + phys = <&u2port0 PHY_TYPE_USB2>, <&u3port0 PHY_TYPE_USB3>; + status = "disabled"; +};