[RESEND,v2,3/3] phy: qcom: add the SGMII SerDes PHY driver

Message ID	20230619091336.194914-4-brgl@bgdev.pl
State	New
Headers	show Return-Path: <linux-arm-msm-owner@vger.kernel.org> From: Bartosz Golaszewski <brgl@bgdev.pl> To: Andy Gross <agross@kernel.org>, Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@linaro.org>, Vinod Koul <vkoul@kernel.org>, Kishon Vijay Abraham I <kishon@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org> Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Subject: [RESEND PATCH v2 3/3] phy: qcom: add the SGMII SerDes PHY driver Date: Mon, 19 Jun 2023 11:13:36 +0200 Message-Id: <20230619091336.194914-4-brgl@bgdev.pl> In-Reply-To: <20230619091336.194914-1-brgl@bgdev.pl> References: <20230619091336.194914-1-brgl@bgdev.pl> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	[RESEND,v2,1/3] phy: qualcomm: fix indentation in Makefile \| expand [RESEND,v2,1/3] phy: qualcomm: fix indentation in Makefile [RESEND,v2,3/3] phy: qcom: add the SGMII SerDes PHY driver

diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index 67a45d95250d..97ca5952e34e 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -188,3 +188,12 @@ config PHY_QCOM_IPQ806X_USB This option enables support for the Synopsis PHYs present inside the Qualcomm USB3.0 DWC3 controller on ipq806x SoC. This driver supports both HS and SS PHY controllers. + +config PHY_QCOM_SGMII_ETH + tristate "Qualcomm DWMAC SGMII SerDes/PHY driver" + depends on OF && (ARCH_QCOM || COMPILE_TEST) + depends on HAS_IOMEM + select GENERIC_PHY + help + Enable this to support the internal SerDes/SGMII PHY on various + Qualcomm chipsets. diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile index 5fb33628566b..b030858e0f8d 100644 --- a/drivers/phy/qualcomm/Makefile +++ b/drivers/phy/qualcomm/Makefile @@ -21,3 +21,4 @@ obj-$(CONFIG_PHY_QCOM_USB_HS_28NM) += phy-qcom-usb-hs-28nm.o obj-$(CONFIG_PHY_QCOM_USB_SS) += phy-qcom-usb-ss.o obj-$(CONFIG_PHY_QCOM_USB_SNPS_FEMTO_V2)+= phy-qcom-snps-femto-v2.o obj-$(CONFIG_PHY_QCOM_IPQ806X_USB) += phy-qcom-ipq806x-usb.o +obj-$(CONFIG_PHY_QCOM_SGMII_ETH) += phy-qcom-sgmii-eth.o diff --git a/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c new file mode 100644 index 000000000000..03dc753f0de1 --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c @@ -0,0 +1,451 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023, Linaro Limited + */ + +#include <linux/clk.h> +#include <linux/ethtool.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#define QSERDES_QMP_PLL 0x0 +#define QSERDES_COM_BIN_VCOCAL_CMP_CODE1_MODE0 (QSERDES_QMP_PLL + 0x1ac) +#define QSERDES_COM_BIN_VCOCAL_CMP_CODE2_MODE0 (QSERDES_QMP_PLL + 0x1b0) +#define QSERDES_COM_BIN_VCOCAL_HSCLK_SEL (QSERDES_QMP_PLL + 0x1bc) +#define QSERDES_COM_CORE_CLK_EN (QSERDES_QMP_PLL + 0x174) +#define QSERDES_COM_CORECLK_DIV_MODE0 (QSERDES_QMP_PLL + 0x168) +#define QSERDES_COM_CP_CTRL_MODE0 (QSERDES_QMP_PLL + 0x74) +#define QSERDES_COM_DEC_START_MODE0 (QSERDES_QMP_PLL + 0xbc) +#define QSERDES_COM_DIV_FRAC_START1_MODE0 (QSERDES_QMP_PLL + 0xcc) +#define QSERDES_COM_DIV_FRAC_START2_MODE0 (QSERDES_QMP_PLL + 0xd0) +#define QSERDES_COM_DIV_FRAC_START3_MODE0 (QSERDES_QMP_PLL + 0xd4) +#define QSERDES_COM_HSCLK_HS_SWITCH_SEL (QSERDES_QMP_PLL + 0x15c) +#define QSERDES_COM_HSCLK_SEL (QSERDES_QMP_PLL + 0x158) +#define QSERDES_COM_LOCK_CMP1_MODE0 (QSERDES_QMP_PLL + 0xac) +#define QSERDES_COM_LOCK_CMP2_MODE0 (QSERDES_QMP_PLL + 0xb0) +#define QSERDES_COM_PLL_CCTRL_MODE0 (QSERDES_QMP_PLL + 0x84) +#define QSERDES_COM_PLL_IVCO (QSERDES_QMP_PLL + 0x58) +#define QSERDES_COM_PLL_RCTRL_MODE0 (QSERDES_QMP_PLL + 0x7c) +#define QSERDES_COM_SYSCLK_EN_SEL (QSERDES_QMP_PLL + 0x94) +#define QSERDES_COM_VCO_TUNE1_MODE0 (QSERDES_QMP_PLL + 0x110) +#define QSERDES_COM_VCO_TUNE2_MODE0 (QSERDES_QMP_PLL + 0x114) +#define QSERDES_COM_VCO_TUNE_INITVAL2 (QSERDES_QMP_PLL + 0x124) +#define QSERDES_COM_C_READY_STATUS (QSERDES_QMP_PLL + 0x178) +#define QSERDES_COM_CMN_STATUS (QSERDES_QMP_PLL + 0x140) + +#define QSERDES_RX 0x600 +#define QSERDES_RX_UCDR_FO_GAIN (QSERDES_RX + 0x8) +#define QSERDES_RX_UCDR_SO_GAIN (QSERDES_RX + 0x14) +#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN (QSERDES_RX + 0x30) +#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE (QSERDES_RX + 0x34) +#define QSERDES_RX_UCDR_FASTLOCK_COUNT_LOW (QSERDES_RX + 0x3c) +#define QSERDES_RX_UCDR_FASTLOCK_COUNT_HIGH (QSERDES_RX + 0x40) +#define QSERDES_RX_UCDR_PI_CONTROLS (QSERDES_RX + 0x44) +#define QSERDES_RX_UCDR_PI_CTRL2 (QSERDES_RX + 0x48) +#define QSERDES_RX_RX_TERM_BW (QSERDES_RX + 0x80) +#define QSERDES_RX_VGA_CAL_CNTRL2 (QSERDES_RX + 0xd8) +#define QSERDES_RX_GM_CAL (QSERDES_RX + 0xdc) +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL1 (QSERDES_RX + 0xe8) +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 (QSERDES_RX + 0xec) +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 (QSERDES_RX + 0xf0) +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 (QSERDES_RX + 0xf4) +#define QSERDES_RX_RX_IDAC_TSETTLE_LOW (QSERDES_RX + 0xf8) +#define QSERDES_RX_RX_IDAC_TSETTLE_HIGH (QSERDES_RX + 0xfc) +#define QSERDES_RX_RX_IDAC_MEASURE_TIME (QSERDES_RX + 0x100) +#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 (QSERDES_RX + 0x110) +#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 (QSERDES_RX + 0x114) +#define QSERDES_RX_SIGDET_CNTRL (QSERDES_RX + 0x11c) +#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL (QSERDES_RX + 0x124) +#define QSERDES_RX_RX_BAND (QSERDES_RX + 0x128) +#define QSERDES_RX_RX_MODE_00_LOW (QSERDES_RX + 0x15c) +#define QSERDES_RX_RX_MODE_00_HIGH (QSERDES_RX + 0x160) +#define QSERDES_RX_RX_MODE_00_HIGH2 (QSERDES_RX + 0x164) +#define QSERDES_RX_RX_MODE_00_HIGH3 (QSERDES_RX + 0x168) +#define QSERDES_RX_RX_MODE_00_HIGH4 (QSERDES_RX + 0x16c) +#define QSERDES_RX_RX_MODE_01_LOW (QSERDES_RX + 0x170) +#define QSERDES_RX_RX_MODE_01_HIGH (QSERDES_RX + 0x174) +#define QSERDES_RX_RX_MODE_01_HIGH2 (QSERDES_RX + 0x178) +#define QSERDES_RX_RX_MODE_01_HIGH3 (QSERDES_RX + 0x17c) +#define QSERDES_RX_RX_MODE_01_HIGH4 (QSERDES_RX + 0x180) +#define QSERDES_RX_RX_MODE_10_LOW (QSERDES_RX + 0x184) +#define QSERDES_RX_RX_MODE_10_HIGH (QSERDES_RX + 0x188) +#define QSERDES_RX_RX_MODE_10_HIGH2 (QSERDES_RX + 0x18c) +#define QSERDES_RX_RX_MODE_10_HIGH3 (QSERDES_RX + 0x190) +#define QSERDES_RX_RX_MODE_10_HIGH4 (QSERDES_RX + 0x194) +#define QSERDES_RX_DCC_CTRL1 (QSERDES_RX + 0x1a8) + +#define QSERDES_TX 0x400 +#define QSERDES_TX_TX_BAND (QSERDES_TX + 0x24) +#define QSERDES_TX_SLEW_CNTL (QSERDES_TX + 0x28) +#define QSERDES_TX_RES_CODE_LANE_OFFSET_TX (QSERDES_TX + 0x3c) +#define QSERDES_TX_RES_CODE_LANE_OFFSET_RX (QSERDES_TX + 0x40) +#define QSERDES_TX_LANE_MODE_1 (QSERDES_TX + 0x84) +#define QSERDES_TX_LANE_MODE_3 (QSERDES_TX + 0x8c) +#define QSERDES_TX_RCV_DETECT_LVL_2 (QSERDES_TX + 0xa4) +#define QSERDES_TX_TRAN_DRVR_EMP_EN (QSERDES_TX + 0xc0) + +#define QSERDES_PCS 0xC00 +#define QSERDES_PCS_PHY_START (QSERDES_PCS + 0x0) +#define QSERDES_PCS_POWER_DOWN_CONTROL (QSERDES_PCS + 0x4) +#define QSERDES_PCS_SW_RESET (QSERDES_PCS + 0x8) +#define QSERDES_PCS_LINE_RESET_TIME (QSERDES_PCS + 0xc) +#define QSERDES_PCS_TX_LARGE_AMP_DRV_LVL (QSERDES_PCS + 0x20) +#define QSERDES_PCS_TX_SMALL_AMP_DRV_LVL (QSERDES_PCS + 0x28) +#define QSERDES_PCS_TX_MID_TERM_CTRL1 (QSERDES_PCS + 0xd8) +#define QSERDES_PCS_TX_MID_TERM_CTRL2 (QSERDES_PCS + 0xdc) +#define QSERDES_PCS_SGMII_MISC_CTRL8 (QSERDES_PCS + 0x118) +#define QSERDES_PCS_PCS_READY_STATUS (QSERDES_PCS + 0x94) + +#define QSERDES_COM_C_READY BIT(0) +#define QSERDES_PCS_READY BIT(0) +#define QSERDES_PCS_SGMIIPHY_READY BIT(7) +#define QSERDES_COM_C_PLL_LOCKED BIT(1) + +struct qcom_dwmac_sgmii_phy_data { + struct regmap *regmap; + struct clk *refclk; + int speed; +}; + +static void qcom_dwmac_sgmii_phy_init_1g(struct regmap *regmap) +{ + regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x01); + regmap_write(regmap, QSERDES_PCS_POWER_DOWN_CONTROL, 0x01); + + regmap_write(regmap, QSERDES_COM_PLL_IVCO, 0x0F); + regmap_write(regmap, QSERDES_COM_CP_CTRL_MODE0, 0x06); + regmap_write(regmap, QSERDES_COM_PLL_RCTRL_MODE0, 0x16); + regmap_write(regmap, QSERDES_COM_PLL_CCTRL_MODE0, 0x36); + regmap_write(regmap, QSERDES_COM_SYSCLK_EN_SEL, 0x1A); + regmap_write(regmap, QSERDES_COM_LOCK_CMP1_MODE0, 0x0A); + regmap_write(regmap, QSERDES_COM_LOCK_CMP2_MODE0, 0x1A); + regmap_write(regmap, QSERDES_COM_DEC_START_MODE0, 0x82); + regmap_write(regmap, QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55); + regmap_write(regmap, QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55); + regmap_write(regmap, QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03); + regmap_write(regmap, QSERDES_COM_VCO_TUNE1_MODE0, 0x24); + + regmap_write(regmap, QSERDES_COM_VCO_TUNE2_MODE0, 0x02); + regmap_write(regmap, QSERDES_COM_VCO_TUNE_INITVAL2, 0x00); + regmap_write(regmap, QSERDES_COM_HSCLK_SEL, 0x04); + regmap_write(regmap, QSERDES_COM_HSCLK_HS_SWITCH_SEL, 0x00); + regmap_write(regmap, QSERDES_COM_CORECLK_DIV_MODE0, 0x0A); + regmap_write(regmap, QSERDES_COM_CORE_CLK_EN, 0x00); + regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xB9); + regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1E); + regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_HSCLK_SEL, 0x11); + + regmap_write(regmap, QSERDES_TX_TX_BAND, 0x05); + regmap_write(regmap, QSERDES_TX_SLEW_CNTL, 0x0A); + regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_TX, 0x09); + regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_RX, 0x09); + regmap_write(regmap, QSERDES_TX_LANE_MODE_1, 0x05); + regmap_write(regmap, QSERDES_TX_LANE_MODE_3, 0x00); + regmap_write(regmap, QSERDES_TX_RCV_DETECT_LVL_2, 0x12); + regmap_write(regmap, QSERDES_TX_TRAN_DRVR_EMP_EN, 0x0C); + + regmap_write(regmap, QSERDES_RX_UCDR_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX_UCDR_SO_GAIN, 0x06); + regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x7F); + regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00); + regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX_UCDR_PI_CONTROLS, 0x81); + regmap_write(regmap, QSERDES_RX_UCDR_PI_CTRL2, 0x80); + regmap_write(regmap, QSERDES_RX_RX_TERM_BW, 0x04); + regmap_write(regmap, QSERDES_RX_VGA_CAL_CNTRL2, 0x08); + regmap_write(regmap, QSERDES_RX_GM_CAL, 0x0F); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL1, 0x04); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4A); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0A); + regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_LOW, 0x80); + regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX_RX_IDAC_MEASURE_TIME, 0x20); + regmap_write(regmap, QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x17); + regmap_write(regmap, QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX_SIGDET_CNTRL, 0x0F); + regmap_write(regmap, QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x1E); + regmap_write(regmap, QSERDES_RX_RX_BAND, 0x05); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH3, 0x09); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH4, 0xB1); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH3, 0x09); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH4, 0xB1); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH3, 0x3B); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH4, 0xB7); + regmap_write(regmap, QSERDES_RX_DCC_CTRL1, 0x0C); + + regmap_write(regmap, QSERDES_PCS_LINE_RESET_TIME, 0x0C); + regmap_write(regmap, QSERDES_PCS_TX_LARGE_AMP_DRV_LVL, 0x1F); + regmap_write(regmap, QSERDES_PCS_TX_SMALL_AMP_DRV_LVL, 0x03); + regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL1, 0x83); + regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL2, 0x08); + regmap_write(regmap, QSERDES_PCS_SGMII_MISC_CTRL8, 0x0C); + regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x00); + + regmap_write(regmap, QSERDES_PCS_PHY_START, 0x01); +} + +static void qcom_dwmac_sgmii_phy_init_2p5g(struct regmap *regmap) +{ + regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x01); + regmap_write(regmap, QSERDES_PCS_POWER_DOWN_CONTROL, 0x01); + + regmap_write(regmap, QSERDES_COM_PLL_IVCO, 0x0F); + regmap_write(regmap, QSERDES_COM_CP_CTRL_MODE0, 0x06); + regmap_write(regmap, QSERDES_COM_PLL_RCTRL_MODE0, 0x16); + regmap_write(regmap, QSERDES_COM_PLL_CCTRL_MODE0, 0x36); + regmap_write(regmap, QSERDES_COM_SYSCLK_EN_SEL, 0x1A); + regmap_write(regmap, QSERDES_COM_LOCK_CMP1_MODE0, 0x1A); + regmap_write(regmap, QSERDES_COM_LOCK_CMP2_MODE0, 0x41); + regmap_write(regmap, QSERDES_COM_DEC_START_MODE0, 0x7A); + regmap_write(regmap, QSERDES_COM_DIV_FRAC_START1_MODE0, 0x00); + regmap_write(regmap, QSERDES_COM_DIV_FRAC_START2_MODE0, 0x20); + regmap_write(regmap, QSERDES_COM_DIV_FRAC_START3_MODE0, 0x01); + regmap_write(regmap, QSERDES_COM_VCO_TUNE1_MODE0, 0xA1); + + regmap_write(regmap, QSERDES_COM_VCO_TUNE2_MODE0, 0x02); + regmap_write(regmap, QSERDES_COM_VCO_TUNE_INITVAL2, 0x00); + regmap_write(regmap, QSERDES_COM_HSCLK_SEL, 0x03); + regmap_write(regmap, QSERDES_COM_HSCLK_HS_SWITCH_SEL, 0x00); + regmap_write(regmap, QSERDES_COM_CORECLK_DIV_MODE0, 0x05); + regmap_write(regmap, QSERDES_COM_CORE_CLK_EN, 0x00); + regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xCD); + regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1C); + regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_HSCLK_SEL, 0x11); + + regmap_write(regmap, QSERDES_TX_TX_BAND, 0x04); + regmap_write(regmap, QSERDES_TX_SLEW_CNTL, 0x0A); + regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_TX, 0x09); + regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_RX, 0x02); + regmap_write(regmap, QSERDES_TX_LANE_MODE_1, 0x05); + regmap_write(regmap, QSERDES_TX_LANE_MODE_3, 0x00); + regmap_write(regmap, QSERDES_TX_RCV_DETECT_LVL_2, 0x12); + regmap_write(regmap, QSERDES_TX_TRAN_DRVR_EMP_EN, 0x0C); + + regmap_write(regmap, QSERDES_RX_UCDR_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX_UCDR_SO_GAIN, 0x06); + regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0A); + regmap_write(regmap, QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x7F); + regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00); + regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX_UCDR_PI_CONTROLS, 0x81); + regmap_write(regmap, QSERDES_RX_UCDR_PI_CTRL2, 0x80); + regmap_write(regmap, QSERDES_RX_RX_TERM_BW, 0x00); + regmap_write(regmap, QSERDES_RX_VGA_CAL_CNTRL2, 0x08); + regmap_write(regmap, QSERDES_RX_GM_CAL, 0x0F); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL1, 0x04); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4A); + regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0A); + regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_LOW, 0x80); + regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_HIGH, 0x01); + regmap_write(regmap, QSERDES_RX_RX_IDAC_MEASURE_TIME, 0x20); + regmap_write(regmap, QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x17); + regmap_write(regmap, QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x00); + regmap_write(regmap, QSERDES_RX_SIGDET_CNTRL, 0x0F); + regmap_write(regmap, QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x1E); + regmap_write(regmap, QSERDES_RX_RX_BAND, 0x18); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_LOW, 0x18); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH3, 0x0C); + regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH4, 0xB8); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH3, 0x09); + regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH4, 0xB1); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_LOW, 0xE0); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH2, 0xC8); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH3, 0x3B); + regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH4, 0xB7); + regmap_write(regmap, QSERDES_RX_DCC_CTRL1, 0x0C); + + regmap_write(regmap, QSERDES_PCS_LINE_RESET_TIME, 0x0C); + regmap_write(regmap, QSERDES_PCS_TX_LARGE_AMP_DRV_LVL, 0x1F); + regmap_write(regmap, QSERDES_PCS_TX_SMALL_AMP_DRV_LVL, 0x03); + regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL1, 0x83); + regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL2, 0x08); + regmap_write(regmap, QSERDES_PCS_SGMII_MISC_CTRL8, 0x8C); + regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x00); + + regmap_write(regmap, QSERDES_PCS_PHY_START, 0x01); +} + +static inline int +qcom_dwmac_sgmii_phy_poll_status(struct regmap *regmap, unsigned int reg, + unsigned int bit) +{ + unsigned int val; + + return regmap_read_poll_timeout(regmap, reg, val, + val & bit, 1500, 750000); +} + +static int qcom_dwmac_sgmii_phy_calibrate(struct phy *phy) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + struct device *dev = phy->dev.parent; + + switch (data->speed) { + case SPEED_10: + case SPEED_100: + case SPEED_1000: + qcom_dwmac_sgmii_phy_init_1g(data->regmap); + break; + case SPEED_2500: + qcom_dwmac_sgmii_phy_init_2p5g(data->regmap); + break; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_COM_C_READY_STATUS, + QSERDES_COM_C_READY)) { + dev_err(dev, "QSERDES_COM_C_READY_STATUS timed-out"); + return -ETIMEDOUT; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_PCS_PCS_READY_STATUS, + QSERDES_PCS_READY)) { + dev_err(dev, "PCS_READY timed-out"); + return -ETIMEDOUT; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_PCS_PCS_READY_STATUS, + QSERDES_PCS_SGMIIPHY_READY)) { + dev_err(dev, "SGMIIPHY_READY timed-out"); + return -ETIMEDOUT; + } + + if (qcom_dwmac_sgmii_phy_poll_status(data->regmap, + QSERDES_COM_CMN_STATUS, + QSERDES_COM_C_PLL_LOCKED)) { + dev_err(dev, "PLL Lock Status timed-out"); + return -ETIMEDOUT; + } + + return 0; +} + +static int qcom_dwmac_sgmii_phy_power_on(struct phy *phy) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + + return clk_prepare_enable(data->refclk); +} + +static int qcom_dwmac_sgmii_phy_power_off(struct phy *phy) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + + regmap_write(data->regmap, QSERDES_PCS_TX_MID_TERM_CTRL2, 0x08); + regmap_write(data->regmap, QSERDES_PCS_SW_RESET, 0x01); + udelay(100); + regmap_write(data->regmap, QSERDES_PCS_SW_RESET, 0x00); + regmap_write(data->regmap, QSERDES_PCS_PHY_START, 0x01); + + clk_disable_unprepare(data->refclk); + + return 0; +} + +static int qcom_dwmac_sgmii_phy_set_speed(struct phy *phy, int speed) +{ + struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy); + + if (speed != data->speed) + data->speed = speed; + + return qcom_dwmac_sgmii_phy_calibrate(phy); +} + +static const struct phy_ops qcom_dwmac_sgmii_phy_ops = { + .power_on = qcom_dwmac_sgmii_phy_power_on, + .power_off = qcom_dwmac_sgmii_phy_power_off, + .set_speed = qcom_dwmac_sgmii_phy_set_speed, + .calibrate = qcom_dwmac_sgmii_phy_calibrate, + .owner = THIS_MODULE, +}; + +static const struct regmap_config qcom_dwmac_sgmii_phy_regmap_cfg = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .use_relaxed_mmio = true, + .disable_locking = true, +}; + +static int qcom_dwmac_sgmii_phy_probe(struct platform_device *pdev) +{ + struct qcom_dwmac_sgmii_phy_data *data; + struct device *dev = &pdev->dev; + struct phy_provider *provider; + void __iomem *base; + struct phy *phy; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->speed = SPEED_10; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + data->regmap = devm_regmap_init_mmio(dev, base, + &qcom_dwmac_sgmii_phy_regmap_cfg); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); + + phy = devm_phy_create(dev, NULL, &qcom_dwmac_sgmii_phy_ops); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + data->refclk = devm_clk_get(dev, "sgmi_ref"); + if (IS_ERR(data->refclk)) + return PTR_ERR(data->refclk); + + provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(provider)) + return PTR_ERR(provider); + + phy_set_drvdata(phy, data); + + return 0; +} + +static const struct of_device_id qcom_dwmac_sgmii_phy_of_match[] = { + { .compatible = "qcom,sa8775p-dwmac-sgmii-phy" }, + { }, +}; +MODULE_DEVICE_TABLE(of, qcom_dwmac_sgmii_phy_of_match); + +static struct platform_driver qcom_dwmac_sgmii_phy_driver = { + .probe = qcom_dwmac_sgmii_phy_probe, + .driver = { + .name = "qcom-dwmac-sgmii-phy", + .of_match_table = qcom_dwmac_sgmii_phy_of_match, + } +}; + +module_platform_driver(qcom_dwmac_sgmii_phy_driver); + +MODULE_DESCRIPTION("Qualcomm DWMAC SGMII PHY driver"); +MODULE_LICENSE("GPL");

[RESEND,v2,3/3] phy: qcom: add the SGMII SerDes PHY driver

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Patch