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phy: qcom-qusb2: Add new overriding tuning parameters in QUSB2 V2 PHY

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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>
This commit is contained in:
Sandeep Maheswaram 2020-03-09 15:23:06 +05:30 committed by Kishon Vijay Abraham I
parent 449aede39a
commit 89d715371a
1 changed files with 51 additions and 0 deletions
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51
drivers/phy/qualcomm/phy-qcom-qusb2.c
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@ -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);
/*