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phy: renesas: rcar-gen3-usb2: follow the hardware manual procedure
This patch modifies rcar_gen3_init_otg() procedure to follow Figure 73.4 of "R-Car Series, 3rd Generation User's Manual: Hardware Rev.1.00". Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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@ -307,16 +307,21 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch)
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void __iomem *usb2_base = ch->base;
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u32 val;
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/* Should not use functions of read-modify-write a register */
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val = readl(usb2_base + USB2_LINECTRL1);
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val = (val & ~USB2_LINECTRL1_DP_RPD) | USB2_LINECTRL1_DPRPD_EN |
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USB2_LINECTRL1_DMRPD_EN | USB2_LINECTRL1_DM_RPD;
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writel(val, usb2_base + USB2_LINECTRL1);
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val = readl(usb2_base + USB2_VBCTRL);
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writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL);
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writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA);
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rcar_gen3_control_otg_irq(ch, 1);
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val = readl(usb2_base + USB2_ADPCTRL);
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writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL);
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val = readl(usb2_base + USB2_LINECTRL1);
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rcar_gen3_set_linectrl(ch, 0, 0);
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writel(val | USB2_LINECTRL1_DPRPD_EN | USB2_LINECTRL1_DMRPD_EN,
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usb2_base + USB2_LINECTRL1);
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msleep(20);
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writel(0xffffffff, usb2_base + USB2_OBINTSTA);
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writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTEN);
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rcar_gen3_device_recognition(ch);
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}
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