Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
phy: usb: add support for bcm74110
bcm74110 adds a freerun utmi/ref clock that saves further power during
suspend states. A tune is also necessary to pass USB compliance test.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20250402185159.2976920-3-justin.chen@broadcom.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
authored by
Justin Chen
and committed by
Vinod Koul
686b2730
0fbceff4
+76
+61
drivers/phy/broadcom/phy-brcm-usb-init-synopsys.c
+61
drivers/phy/broadcom/phy-brcm-usb-init-synopsys.c
···
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#define USB_CTRL_SETUP_tca_drv_sel_MASK BIT(24)
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#define USB_CTRL_SETUP_STRAP_IPP_SEL_MASK BIT(25)
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#define USB_CTRL_USB_PM 0x04
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#define USB_CTRL_USB_PM_REF_S2_CLK_SWITCH_EN_MASK BIT(1)
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#define USB_CTRL_USB_PM_UTMI_S2_CLK_SWITCH_EN_MASK BIT(2)
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#define USB_CTRL_USB_PM_XHC_S2_CLK_SWITCH_EN_MASK BIT(3)
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#define USB_CTRL_USB_PM_XHC_PME_EN_MASK BIT(4)
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#define USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK BIT(22)
···
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#define USB_CTRL_CTLR_CSHCR_ctl_pme_en_MASK BIT(18)
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#define USB_CTRL_P0_U2PHY_CFG1 0x68
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#define USB_CTRL_P0_U2PHY_CFG1_COMMONONN_MASK BIT(10)
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#define USB_CTRL_P0_U2PHY_CFG2 0x6c
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#define USB_CTRL_P0_U2PHY_CFG2_TXVREFTUNE0_MASK GENMASK(20, 17)
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#define USB_CTRL_P0_U2PHY_CFG2_TXVREFTUNE0_SHIFT 17
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#define USB_CTRL_P0_U2PHY_CFG2_TXRESTUNE0_MASK GENMASK(24, 23)
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#define USB_CTRL_P0_U2PHY_CFG2_TXRESTUNE0_SHIFT 23
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#define USB_CTRL_P0_U2PHY_CFG2_TXPREEMPAMPTUNE0_MASK GENMASK(26, 25)
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#define USB_CTRL_P0_U2PHY_CFG2_TXPREEMPAMPTUNE0_SHIFT 25
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/* Register definitions for the USB_PHY block in 7211b0 */
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#define USB_PHY_PLL_CTL 0x00
···
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}
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}
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static void usb_init_common_74110(struct brcm_usb_init_params *params)
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{
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void __iomem *ctrl = params->regs[BRCM_REGS_CTRL];
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u32 reg;
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reg = brcm_usb_readl(USB_CTRL_REG(ctrl, USB_PM));
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reg &= ~(USB_CTRL_MASK(USB_PM, REF_S2_CLK_SWITCH_EN) |
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USB_CTRL_MASK(USB_PM, UTMI_S2_CLK_SWITCH_EN));
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brcm_usb_writel(reg, USB_CTRL_REG(ctrl, USB_PM));
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usb_init_common_7216(params);
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reg = brcm_usb_readl(USB_CTRL_REG(ctrl, P0_U2PHY_CFG2));
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reg &= ~(USB_CTRL_P0_U2PHY_CFG2_TXVREFTUNE0_MASK |
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USB_CTRL_P0_U2PHY_CFG2_TXRESTUNE0_MASK |
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USB_CTRL_P0_U2PHY_CFG2_TXPREEMPAMPTUNE0_MASK);
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reg |= (0x6 << USB_CTRL_P0_U2PHY_CFG2_TXVREFTUNE0_SHIFT) |
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(0x3 << USB_CTRL_P0_U2PHY_CFG2_TXRESTUNE0_SHIFT) |
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(0x2 << USB_CTRL_P0_U2PHY_CFG2_TXPREEMPAMPTUNE0_SHIFT);
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brcm_usb_writel(reg, USB_CTRL_REG(ctrl, P0_U2PHY_CFG2));
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}
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static void usb_uninit_common_74110(struct brcm_usb_init_params *params)
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{
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void __iomem *ctrl = params->regs[BRCM_REGS_CTRL];
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u32 reg;
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if (params->wake_enabled) {
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reg = brcm_usb_readl(USB_CTRL_REG(ctrl, USB_PM));
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reg |= (USB_CTRL_MASK(USB_PM, REF_S2_CLK_SWITCH_EN) |
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USB_CTRL_MASK(USB_PM, UTMI_S2_CLK_SWITCH_EN));
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brcm_usb_writel(reg, USB_CTRL_REG(ctrl, USB_PM));
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}
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usb_uninit_common_7216(params);
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}
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static void usb_uninit_common_7211b0(struct brcm_usb_init_params *params)
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{
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void __iomem *ctrl = params->regs[BRCM_REGS_CTRL];
···
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brcm_usb_writel(reg, USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
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}
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static const struct brcm_usb_init_ops bcm74110_ops = {
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.init_ipp = usb_init_ipp,
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.init_common = usb_init_common_74110,
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.init_xhci = usb_init_xhci,
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.uninit_common = usb_uninit_common_74110,
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.uninit_xhci = usb_uninit_xhci,
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.get_dual_select = usb_get_dual_select,
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.set_dual_select = usb_set_dual_select,
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};
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static const struct brcm_usb_init_ops bcm7216_ops = {
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.init_ipp = usb_init_ipp,
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.init_common = usb_init_common_7216,
···
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.get_dual_select = usb_get_dual_select,
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.set_dual_select = usb_set_dual_select,
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};
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void brcm_usb_dvr_init_74110(struct brcm_usb_init_params *params)
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{
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params->family_name = "74110";
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params->ops = &bcm74110_ops;
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}
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void brcm_usb_dvr_init_7216(struct brcm_usb_init_params *params)
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{
+1
drivers/phy/broadcom/phy-brcm-usb-init.h
+1
drivers/phy/broadcom/phy-brcm-usb-init.h
···
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bool wake_enabled;
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};
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void brcm_usb_dvr_init_74110(struct brcm_usb_init_params *params);
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void brcm_usb_dvr_init_4908(struct brcm_usb_init_params *params);
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void brcm_usb_dvr_init_7445(struct brcm_usb_init_params *params);
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void brcm_usb_dvr_init_7216(struct brcm_usb_init_params *params);
+14
drivers/phy/broadcom/phy-brcm-usb.c
+14
drivers/phy/broadcom/phy-brcm-usb.c
···
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.attrs = brcm_usb_phy_attrs,
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};
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static const struct match_chip_info chip_info_74110 = {
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.init_func = &brcm_usb_dvr_init_74110,
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.required_regs = {
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BRCM_REGS_CTRL,
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BRCM_REGS_XHCI_EC,
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BRCM_REGS_XHCI_GBL,
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-1,
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},
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};
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static const struct match_chip_info chip_info_4908 = {
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.init_func = &brcm_usb_dvr_init_4908,
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.required_regs = {
···
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};
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static const struct of_device_id brcm_usb_dt_ids[] = {
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{
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.compatible = "brcm,bcm74110-usb-phy",
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.data = &chip_info_74110,
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},
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{
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.compatible = "brcm,bcm4908-usb-phy",
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.data = &chip_info_4908,