mvebu: cp110: add support for USB comphy configuration

Change-Id: I1a3ff0bb832a165bb37e1e6eea1b5c1d438505b5
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/52799
Tested-by: iSoC Platform CI <ykjenk@marvell.com>
Reviewed-by: Igal Liberman <igall@marvell.com>
Reviewed-by: Kostya Porotchkin <kostap@marvell.com>

1 files changed, 139 insertions, 0 deletions

diff --git a/drivers/marvell/comphy/phy-comphy-cp110.c b/drivers/marvell/comphy/phy-comphy-cp110.c
index cdc466e3..c7984174 100644
--- a/drivers/marvell/comphy/phy-comphy-cp110.c
+++ b/drivers/marvell/comphy/phy-comphy-cp110.c
@@ -1736,6 +1736,141 @@ static int mvebu_cp110_comphy_rxaui_power_on(uint64_t comphy_base,
 	return ret;
 }
 
+static int mvebu_cp110_comphy_usb3_power_on(uint64_t comphy_base,
+				     uint8_t comphy_index, uint32_t comphy_mode)
+{
+	uintptr_t hpipe_addr, comphy_addr, addr;
+	uint32_t mask, data;
+	int ret = 0;
+
+	debug_enter();
+
+	/* Configure PIPE selector for USB3 */
+	mvebu_cp110_comphy_set_pipe_selector(comphy_base, comphy_index,
+								   comphy_mode);
+
+	hpipe_addr = HPIPE_ADDR(COMPHY_PIPE_FROM_COMPHY_ADDR(comphy_base),
+				comphy_index);
+	comphy_addr = COMPHY_ADDR(comphy_base, comphy_index);
+
+	debug("stage: RFU configurations - hard reset comphy\n");
+	/* RFU configurations - hard reset comphy */
+	mask = COMMON_PHY_CFG1_PWR_UP_MASK;
+	data = 0x1 << COMMON_PHY_CFG1_PWR_UP_OFFSET;
+	mask |= COMMON_PHY_CFG1_PIPE_SELECT_MASK;
+	data |= 0x1 << COMMON_PHY_CFG1_PIPE_SELECT_OFFSET;
+	mask |= COMMON_PHY_CFG1_PWR_ON_RESET_MASK;
+	data |= 0x0 << COMMON_PHY_CFG1_PWR_ON_RESET_OFFSET;
+	mask |= COMMON_PHY_CFG1_CORE_RSTN_MASK;
+	data |= 0x0 << COMMON_PHY_CFG1_CORE_RSTN_OFFSET;
+	mask |= COMMON_PHY_PHY_MODE_MASK;
+	data |= 0x1 << COMMON_PHY_PHY_MODE_OFFSET;
+	reg_set(comphy_addr + COMMON_PHY_CFG1_REG, data, mask);
+
+	/* release from hard reset */
+	mask = COMMON_PHY_CFG1_PWR_ON_RESET_MASK;
+	data = 0x1 << COMMON_PHY_CFG1_PWR_ON_RESET_OFFSET;
+	mask |= COMMON_PHY_CFG1_CORE_RSTN_MASK;
+	data |= 0x1 << COMMON_PHY_CFG1_CORE_RSTN_OFFSET;
+	reg_set(comphy_addr + COMMON_PHY_CFG1_REG, data, mask);
+
+	/* Wait 1ms - until band gap and ref clock ready */
+	mdelay(1);
+
+	/* Start comphy Configuration */
+	debug("stage: Comphy configuration\n");
+	/* Set PIPE soft reset */
+	mask = HPIPE_RST_CLK_CTRL_PIPE_RST_MASK;
+	data = 0x1 << HPIPE_RST_CLK_CTRL_PIPE_RST_OFFSET;
+	/* Set PHY datapath width mode for V0 */
+	mask |= HPIPE_RST_CLK_CTRL_FIXED_PCLK_MASK;
+	data |= 0x0 << HPIPE_RST_CLK_CTRL_FIXED_PCLK_OFFSET;
+	/* Set Data bus width USB mode for V0 */
+	mask |= HPIPE_RST_CLK_CTRL_PIPE_WIDTH_MASK;
+	data |= 0x0 << HPIPE_RST_CLK_CTRL_PIPE_WIDTH_OFFSET;
+	/* Set CORE_CLK output frequency for 250Mhz */
+	mask |= HPIPE_RST_CLK_CTRL_CORE_FREQ_SEL_MASK;
+	data |= 0x0 << HPIPE_RST_CLK_CTRL_CORE_FREQ_SEL_OFFSET;
+	reg_set(hpipe_addr + HPIPE_RST_CLK_CTRL_REG, data, mask);
+	/* Set PLL ready delay for 0x2 */
+	reg_set(hpipe_addr + HPIPE_CLK_SRC_LO_REG,
+		0x2 << HPIPE_CLK_SRC_LO_PLL_RDY_DL_OFFSET,
+		HPIPE_CLK_SRC_LO_PLL_RDY_DL_MASK);
+	/* Set reference clock to come from group 1 - 25Mhz */
+	reg_set(hpipe_addr + HPIPE_MISC_REG,
+		0x0 << HPIPE_MISC_REFCLK_SEL_OFFSET,
+		HPIPE_MISC_REFCLK_SEL_MASK);
+	/* Set reference frequcency select - 0x2 */
+	mask = HPIPE_PWR_PLL_REF_FREQ_MASK;
+	data = 0x2 << HPIPE_PWR_PLL_REF_FREQ_OFFSET;
+	/* Set PHY mode to USB - 0x5 */
+	mask |= HPIPE_PWR_PLL_PHY_MODE_MASK;
+	data |= 0x5 << HPIPE_PWR_PLL_PHY_MODE_OFFSET;
+	reg_set(hpipe_addr + HPIPE_PWR_PLL_REG, data, mask);
+	/* Set the amount of time spent in the LoZ state - set for 0x7 */
+	reg_set(hpipe_addr + HPIPE_GLOBAL_PM_CTRL,
+		0x7 << HPIPE_GLOBAL_PM_RXDLOZ_WAIT_OFFSET,
+		HPIPE_GLOBAL_PM_RXDLOZ_WAIT_MASK);
+	/* Set max PHY generation setting - 5Gbps */
+	reg_set(hpipe_addr + HPIPE_INTERFACE_REG,
+		0x1 << HPIPE_INTERFACE_GEN_MAX_OFFSET,
+		HPIPE_INTERFACE_GEN_MAX_MASK);
+	/* Set select data width 20Bit (SEL_BITS[2:0]) */
+	reg_set(hpipe_addr + HPIPE_LOOPBACK_REG,
+		0x1 << HPIPE_LOOPBACK_SEL_OFFSET,
+		HPIPE_LOOPBACK_SEL_MASK);
+	/* select de-emphasize 3.5db */
+	reg_set(hpipe_addr + HPIPE_LANE_CONFIG0_REG,
+		0x1 << HPIPE_LANE_CONFIG0_TXDEEMPH0_OFFSET,
+		HPIPE_LANE_CONFIG0_TXDEEMPH0_MASK);
+	/* override tx margining from the MAC */
+	reg_set(hpipe_addr + HPIPE_TST_MODE_CTRL_REG,
+		0x1 << HPIPE_TST_MODE_CTRL_MODE_MARGIN_OFFSET,
+		HPIPE_TST_MODE_CTRL_MODE_MARGIN_MASK);
+
+	/* Start analog parameters from ETP(HW) */
+	debug("stage: Analog parameters from ETP(HW)\n");
+	/* Set Pin DFE_PAT_DIS -> Bit[1]: PIN_DFE_PAT_DIS = 0x0 */
+	mask = HPIPE_LANE_CFG4_DFE_CTRL_MASK;
+	data = 0x1 << HPIPE_LANE_CFG4_DFE_CTRL_OFFSET;
+	/* Set Override PHY DFE control pins for 0x1 */
+	mask |= HPIPE_LANE_CFG4_DFE_OVER_MASK;
+	data |= 0x1 << HPIPE_LANE_CFG4_DFE_OVER_OFFSET;
+	/* Set Spread Spectrum Clock Enable fot 0x1 */
+	mask |= HPIPE_LANE_CFG4_SSC_CTRL_MASK;
+	data |= 0x1 << HPIPE_LANE_CFG4_SSC_CTRL_OFFSET;
+	reg_set(hpipe_addr + HPIPE_LANE_CFG4_REG, data, mask);
+	/* Confifure SSC amplitude */
+	mask = HPIPE_G2_TX_SSC_AMP_MASK;
+	data = 0x1f << HPIPE_G2_TX_SSC_AMP_OFFSET;
+	reg_set(hpipe_addr + HPIPE_G2_SET_2_REG, data, mask);
+	/* End of analog parameters */
+
+	debug("stage: Comphy power up\n");
+	/* Release from PIPE soft reset */
+	reg_set(hpipe_addr + HPIPE_RST_CLK_CTRL_REG,
+		0x0 << HPIPE_RST_CLK_CTRL_PIPE_RST_OFFSET,
+		HPIPE_RST_CLK_CTRL_PIPE_RST_MASK);
+
+	/* wait 15ms - for comphy calibration done */
+	debug("stage: Check PLL\n");
+	/* Read lane status */
+	addr = hpipe_addr + HPIPE_LANE_STATUS1_REG;
+	data = HPIPE_LANE_STATUS1_PCLK_EN_MASK;
+	mask = data;
+	data = polling_with_timeout(addr, data, mask, 15000, REG_32BIT);
+	if (data != 0) {
+		debug("Read from reg = %lx - value = 0x%x\n",
+			hpipe_addr + HPIPE_LANE_STATUS1_REG, data);
+		ERROR("HPIPE_LANE_STATUS1_PCLK_EN_MASK is 0\n");
+		ret = -ETIMEDOUT;
+	}
+
+	debug_exit();
+
+	return ret;
+}
+
 int mvebu_cp110_comphy_power_on(uint64_t comphy_base, uint64_t comphy_index, uint64_t comphy_mode)
 {
 	int mode = COMPHY_GET_MODE(comphy_mode);
@@ -1761,6 +1896,10 @@ int mvebu_cp110_comphy_power_on(uint64_t comphy_base, uint64_t comphy_index, uin
 		break;
 	case (COMPHY_RXAUI_MODE):
 		err = mvebu_cp110_comphy_rxaui_power_on(comphy_base, comphy_index, comphy_mode);
+	case (COMPHY_USB3H_MODE):
+	case (COMPHY_USB3D_MODE):
+		err = mvebu_cp110_comphy_usb3_power_on(comphy_base, comphy_index, comphy_mode);
+		break;
 	default:
 		ERROR("comphy%ld: unsupported comphy mode\n", comphy_index);
 		err = -EINVAL;