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phy: qcom-qmp: Use correct values for ipq8074 PCIe Gen2 PHY init 

commit afd55e6d1bd35b4b36847869011447a83a81c8e0 upstream.

There were some problem in ipq8074 Gen2 PCIe phy init sequence.

1. Few register values were wrongly updated in the phy init sequence.
2. The register QSERDES_RX_SIGDET_CNTRL is a RX tuning parameter
   register which is added in serdes table causing the wrong register
   was getting updated.
3. Clocks and resets were not added in the phy init.

Fix these to make Gen2 PCIe port on ipq8074 devices to work.

Fixes: eef243d04b ("phy: qcom-qmp: Add support for IPQ8074")
Cc: stable@vger.kernel.org
Co-developed-by: Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>
Signed-off-by: Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Link: https://lore.kernel.org/r/1596036607-11877-4-git-send-email-sivaprak@codeaurora.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sivaprakash Murugesan 2020-07-29 21:00:03 +05:30 committed by Greg Kroah-Hartman
parent 524e525fa7
commit 83db8dd32b
2 changed files with 11 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/phy/qualcomm/phy-qcom-qmp.c
View File

@ -402,8 +402,8 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_serdes_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0xf),
QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_EN, 0x1),
QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x0),
QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER1, 0x1f),
QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER2, 0x3f),
QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER1, 0xff),
QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER2, 0x1f),
QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x6),
QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0xf),
QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x0),
@ -429,7 +429,6 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_serdes_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN1_MODE0, 0x0),
QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80),
QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CTRL_BY_PSM, 0x1),
QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_CTRL, 0xa),
QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x1),
QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31),
QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x1),
@ -438,7 +437,6 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_serdes_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0x2f),
QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x19),
QMP_PHY_INIT_CFG(QSERDES_COM_CLK_EP_DIV, 0x19),
QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_CNTRL, 0x7),
};
static const struct qmp_phy_init_tbl ipq8074_pcie_tx_tbl[] = {
@ -446,6 +444,8 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_tx_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x6),
QMP_PHY_INIT_CFG(QSERDES_TX_RES_CODE_LANE_OFFSET, 0x2),
QMP_PHY_INIT_CFG(QSERDES_TX_RCV_DETECT_LVL_2, 0x12),
QMP_PHY_INIT_CFG(QSERDES_TX_EMP_POST1_LVL, 0x36),
QMP_PHY_INIT_CFG(QSERDES_TX_SLEW_CNTL, 0x0a),
};
static const struct qmp_phy_init_tbl ipq8074_pcie_rx_tbl[] = {
@ -456,7 +456,6 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_rx_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xdb),
QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x4b),
QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x4),
QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN_HALF, 0x4),
};
static const struct qmp_phy_init_tbl ipq8074_pcie_pcs_tbl[] = {
@ -1107,6 +1106,9 @@ static const struct qmp_phy_cfg msm8996_usb3phy_cfg = {
.pwrdn_ctrl = SW_PWRDN,
};
static const char * const ipq8074_pciephy_clk_l[] = {
"aux", "cfg_ahb",
};
/* list of resets */
static const char * const ipq8074_pciephy_reset_l[] = {
"phy", "common",
@ -1124,8 +1126,8 @@ static const struct qmp_phy_cfg ipq8074_pciephy_cfg = {
.rx_tbl_num = ARRAY_SIZE(ipq8074_pcie_rx_tbl),
.pcs_tbl = ipq8074_pcie_pcs_tbl,
.pcs_tbl_num = ARRAY_SIZE(ipq8074_pcie_pcs_tbl),
.clk_list = NULL,
.num_clks = 0,
.clk_list = ipq8074_pciephy_clk_l,
.num_clks = ARRAY_SIZE(ipq8074_pciephy_clk_l),
.reset_list = ipq8074_pciephy_reset_l,
.num_resets = ARRAY_SIZE(ipq8074_pciephy_reset_l),
.vreg_list = NULL,

2
drivers/phy/qualcomm/phy-qcom-qmp.h
View File

@ -77,6 +77,8 @@
#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc
/* Only for QMP V2 PHY - TX registers */
#define QSERDES_TX_EMP_POST1_LVL 0x018
#define QSERDES_TX_SLEW_CNTL 0x040
#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054
#define QSERDES_TX_DEBUG_BUS_SEL 0x064
#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068