linux-kernel - [PATCH v3 09/16] phy: qcom-qusb2: Add support for QUSB2 V2 version

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Message-Id: <1511256206-1587-10-git-send-email-mgautam@codeaurora.org>
Date:   Tue, 21 Nov 2017 14:53:19 +0530
From:   Manu Gautam <mgautam@...eaurora.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        Manu Gautam <mgautam@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-kernel@...r.kernel.org (open list:GENERIC PHY FRAMEWORK)
Subject: [PATCH v3 09/16] phy: qcom-qusb2: Add support for QUSB2 V2 version

Use register layout to add additional registers present
on QUSB2 PHY V2 version for PHY initialization.
Other than new registers on V2, following two register's
offset and bit definitions are different: POWERDOWN control
and PLL_STATUS.

Signed-off-by: Manu Gautam <mgautam@...eaurora.org>
---
 drivers/phy/qualcomm/phy-qcom-qusb2.c | 64 +++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qusb2.c b/drivers/phy/qualcomm/phy-qcom-qusb2.c
index c0c5358..bda1f4c 100644
--- a/drivers/phy/qualcomm/phy-qcom-qusb2.c
+++ b/drivers/phy/qualcomm/phy-qcom-qusb2.c
@@ -40,15 +40,34 @@
 /* QUSB2PHY_PLL_STATUS register bits */
 #define PLL_LOCKED			BIT(5)
 
+/* QUSB2PHY_PLL_COMMON_STATUS_ONE register bits */
+#define CORE_READY_STATUS		BIT(0)
+
 /* QUSB2PHY_PORT_POWERDOWN register bits */
 #define CLAMP_N_EN			BIT(5)
 #define FREEZIO_N			BIT(1)
 #define POWER_DOWN			BIT(0)
 
+/* QUSB2PHY_PWR_CTRL1 register bits */
+#define PWR_CTRL1_VREF_SUPPLY_TRIM	BIT(5)
+#define PWR_CTRL1_CLAMP_N_EN		BIT(1)
+
 #define QUSB2PHY_REFCLK_ENABLE		BIT(0)
 
 #define PHY_CLK_SCHEME_SEL		BIT(0)
 
+#define	QUSB2PHY_PLL_ANALOG_CONTROLS_TWO	0x04
+#define	QUSB2PHY_PLL_CLOCK_INVERTERS		0x18c
+#define	QUSB2PHY_PLL_CMODE			0x2c
+#define	QUSB2PHY_PLL_LOCK_DELAY			0x184
+#define	QUSB2PHY_PLL_DIGITAL_TIMERS_TWO		0xb4
+#define	QUSB2PHY_PLL_BIAS_CONTROL_1		0x194
+#define	QUSB2PHY_PLL_BIAS_CONTROL_2		0x198
+#define	QUSB2PHY_PWR_CTRL2			0x214
+#define	QUSB2PHY_IMP_CTRL1			0x220
+#define	QUSB2PHY_IMP_CTRL2			0x224
+#define	QUSB2PHY_CHG_CTRL2			0x23c
+
 struct qusb2_phy_init_tbl {
 	unsigned int offset;
 	unsigned int val;
@@ -113,6 +132,38 @@ enum qusb2phy_reg_layout {
 	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00),
 };
 
+static const unsigned int qusb2_v2_regs_layout[] = {
+	[QUSB2PHY_PLL_STATUS]		= 0x1a0,
+	[QUSB2PHY_PORT_TUNE1]		= 0x240,
+	[QUSB2PHY_PORT_TUNE2]		= 0x244,
+	[QUSB2PHY_PORT_TUNE3]		= 0x248,
+	[QUSB2PHY_PORT_TUNE4]		= 0x24c,
+	[QUSB2PHY_PORT_TUNE5]		= 0x250,
+	[QUSB2PHY_PORT_TEST2]		= 0x258,
+	[QUSB2PHY_PORT_POWERDOWN]	= 0x210,
+};
+
+static const struct qusb2_phy_init_tbl qusb2_v2_init_tbl[] = {
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_ANALOG_CONTROLS_TWO, 0x03),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CLOCK_INVERTERS, 0x7c),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_CMODE, 0x80),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_LOCK_DELAY, 0x0a),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_DIGITAL_TIMERS_TWO, 0x19),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_BIAS_CONTROL_1, 0x40),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_BIAS_CONTROL_2, 0x20),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_PWR_CTRL2, 0x21),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_IMP_CTRL1, 0x0),
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_IMP_CTRL2, 0x58),
+
+	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE1, 0x30),
+	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE2, 0x29),
+	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE3, 0xca),
+	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE4, 0x04),
+	QUSB2_PHY_INIT_CFG_L(QUSB2PHY_PORT_TUNE5, 0x03),
+
+	QUSB2_PHY_INIT_CFG(QUSB2PHY_CHG_CTRL2, 0x0),
+};
+
 struct qusb2_phy_cfg {
 	const struct qusb2_phy_init_tbl *tbl;
 	/* number of entries in the table */
@@ -139,6 +190,16 @@ struct qusb2_phy_cfg {
 	.mask_core_ready = PLL_LOCKED,
 };
 
+static const struct qusb2_phy_cfg qusb2_v2_phy_cfg = {
+	.tbl		= qusb2_v2_init_tbl,
+	.tbl_num	= ARRAY_SIZE(qusb2_v2_init_tbl),
+	.regs		= qusb2_v2_regs_layout,
+
+	.disable_ctrl	= (PWR_CTRL1_VREF_SUPPLY_TRIM | PWR_CTRL1_CLAMP_N_EN |
+			   POWER_DOWN),
+	.mask_core_ready = CORE_READY_STATUS,
+};
+
 static const char * const qusb2_phy_vreg_names[] = {
 	"vdda-pll", "vdda-phy-dpdm",
 };
@@ -419,6 +480,9 @@ static int qusb2_phy_exit(struct phy *phy)
 	{
 		.compatible	= "qcom,msm8996-qusb2-phy",
 		.data		= &msm8996_phy_cfg,
+	}, {
+		.compatible	= "qcom,qusb2-v2-phy",
+		.data		= &qusb2_v2_phy_cfg,
 	},
 	{ },
 };
-- 
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