diff options
| author | Sandeep Maheswaram <sanm@codeaurora.org> | 2020-03-09 15:23:06 +0530 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2020-03-20 19:34:29 +0530 |
| commit | 89d715371a05b1dee32faf49014b1acff6138b83 (patch) | |
| tree | e63bdba549fa5331213da818d141423f9825b4ff /drivers/phy | |
| parent | 449aede39a5b64545253bb321eb05d5e9eec3ede (diff) | |
phy: qcom-qusb2: Add new overriding tuning parameters in QUSB2 V2 PHY
Added support for overriding bias-ctrl-value,charge-ctrl-value and
hsdisc-trim-value params for QUSB2 V2 PHY
Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/qualcomm/phy-qcom-qusb2.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c index 44841c9550b4..3708d43b7508 100644 --- a/drivers/phy/qualcomm/phy-qcom-qusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c @@ -66,6 +66,14 @@ #define IMP_RES_OFFSET_MASK GENMASK(5, 0) #define IMP_RES_OFFSET_SHIFT 0x0 +/* QUSB2PHY_PLL_BIAS_CONTROL_2 register bits */ +#define BIAS_CTRL2_RES_OFFSET_MASK GENMASK(5, 0) +#define BIAS_CTRL2_RES_OFFSET_SHIFT 0x0 + +/* QUSB2PHY_CHG_CONTROL_2 register bits */ +#define CHG_CTRL2_OFFSET_MASK GENMASK(5, 4) +#define CHG_CTRL2_OFFSET_SHIFT 0x4 + /* QUSB2PHY_PORT_TUNE1 register bits */ #define HSTX_TRIM_MASK GENMASK(7, 4) #define HSTX_TRIM_SHIFT 0x4 @@ -73,6 +81,10 @@ #define PREEMPHASIS_EN_MASK GENMASK(1, 0) #define PREEMPHASIS_EN_SHIFT 0x0 +/* QUSB2PHY_PORT_TUNE2 register bits */ +#define HSDISC_TRIM_MASK GENMASK(1, 0) +#define HSDISC_TRIM_SHIFT 0x0 + #define QUSB2PHY_PLL_ANALOG_CONTROLS_TWO 0x04 #define QUSB2PHY_PLL_CLOCK_INVERTERS 0x18c #define QUSB2PHY_PLL_CMODE 0x2c @@ -291,12 +303,18 @@ struct override_param { * @hstx_trim: HSTX_TRIM to be updated in TUNE1 register * @preemphasis: Amplitude Pre-Emphasis to be updated in TUNE1 register * @preemphasis_width: half/full-width Pre-Emphasis updated via TUNE1 + * @bias_ctrl: bias ctrl to be updated in BIAS_CONTROL_2 register + * @charge_ctrl: charge ctrl to be updated in CHG_CTRL2 register + * @hsdisc_trim: disconnect threshold to be updated in TUNE2 register */ struct override_params { struct override_param imp_res_offset; struct override_param hstx_trim; struct override_param preemphasis; struct override_param preemphasis_width; + struct override_param bias_ctrl; + struct override_param charge_ctrl; + struct override_param hsdisc_trim; }; /** @@ -409,6 +427,16 @@ static void qusb2_phy_override_phy_params(struct qusb2_phy *qphy) or->imp_res_offset.value << IMP_RES_OFFSET_SHIFT, IMP_RES_OFFSET_MASK); + if (or->bias_ctrl.override) + qusb2_write_mask(qphy->base, QUSB2PHY_PLL_BIAS_CONTROL_2, + or->bias_ctrl.value << BIAS_CTRL2_RES_OFFSET_SHIFT, + BIAS_CTRL2_RES_OFFSET_MASK); + + if (or->charge_ctrl.override) + qusb2_write_mask(qphy->base, QUSB2PHY_CHG_CTRL2, + or->charge_ctrl.value << CHG_CTRL2_OFFSET_SHIFT, + CHG_CTRL2_OFFSET_MASK); + if (or->hstx_trim.override) qusb2_write_mask(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE1], or->hstx_trim.value << HSTX_TRIM_SHIFT, @@ -430,6 +458,11 @@ static void qusb2_phy_override_phy_params(struct qusb2_phy *qphy) cfg->regs[QUSB2PHY_PORT_TUNE1], PREEMPH_WIDTH_HALF_BIT); } + + if (or->hsdisc_trim.override) + qusb2_write_mask(qphy->base, cfg->regs[QUSB2PHY_PORT_TUNE2], + or->hsdisc_trim.value << HSDISC_TRIM_SHIFT, + HSDISC_TRIM_MASK); } /* @@ -879,6 +912,18 @@ static int qusb2_phy_probe(struct platform_device *pdev) or->imp_res_offset.override = true; } + if (!of_property_read_u32(dev->of_node, "qcom,bias-ctrl-value", + &value)) { + or->bias_ctrl.value = (u8)value; + or->bias_ctrl.override = true; + } + + if (!of_property_read_u32(dev->of_node, "qcom,charge-ctrl-value", + &value)) { + or->charge_ctrl.value = (u8)value; + or->charge_ctrl.override = true; + } + if (!of_property_read_u32(dev->of_node, "qcom,hstx-trim-value", &value)) { or->hstx_trim.value = (u8)value; @@ -897,6 +942,12 @@ static int qusb2_phy_probe(struct platform_device *pdev) or->preemphasis_width.override = true; } + if (!of_property_read_u32(dev->of_node, "qcom,hsdisc-trim-value", + &value)) { + or->hsdisc_trim.value = (u8)value; + or->hsdisc_trim.override = true; + } + pm_runtime_set_active(dev); pm_runtime_enable(dev); /* |