[U-Boot] [PATCH 2/5] driver: usb: add EHCI driver for hi3787cv200 SoC
Jorge Ramirez-Ortiz
jorge.ramirez-ortiz at linaro.org
Thu May 4 13:47:07 UTC 2017
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz at linaro.org>
---
.../arm/include/asm/arch-hi3798cv200/hi3798cv200.h | 93 ++++++++++
drivers/usb/host/Kconfig | 6 +
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-hi3798cv200.c | 196 +++++++++++++++++++++
4 files changed, 296 insertions(+)
create mode 100644 arch/arm/include/asm/arch-hi3798cv200/hi3798cv200.h
create mode 100644 drivers/usb/host/ehci-hi3798cv200.c
diff --git a/arch/arm/include/asm/arch-hi3798cv200/hi3798cv200.h b/arch/arm/include/asm/arch-hi3798cv200/hi3798cv200.h
new file mode 100644
index 0000000..c67fda1
--- /dev/null
+++ b/arch/arm/include/asm/arch-hi3798cv200/hi3798cv200.h
@@ -0,0 +1,93 @@
+/*
+ * (C) Copyright 2017 Linaro
+ * Jorge Ramirez-Ortiz <jorge.ramirez-ortiz at linaro.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __HI3798cv200_H__
+#define __HI3798cv200_H__
+
+#define REG_BASE_CRG 0xF8A22000
+#define REG_BASE_SCTL 0xF8000000
+#define REG_BASE_CRG 0xF8A22000
+#define REG_BASE_PERI_CTRL 0xF8A20000
+
+/* DEVICES */
+#define REG_BASE_UART0 0xF8B00000
+#define REG_BASE_EHCI 0XF9890000
+#define REG_BASE_MCI 0xF9830000
+#define REG_BASE_MMC0 0xF9830000
+
+/* SC */
+#define REG_SC_CTRL 0x0000
+#define REG_SC_SYSRES 0x0004
+#define REG_SC_GEN0 0x0080
+#define REG_SC_GEN1 0x0084
+#define REG_SC_GEN2 0x0088
+#define REG_SC_GEN12 0x00B0
+
+/* USB EHCI driver */
+#define PERI_USB0 (0xF8A20000 + 0x120)
+#define PERI_USB1 (0xF8A20000 + 0x124)
+#define PERI_USB3 (0xF8A20000 + 0x12c)
+#define PERI_USB4 (0xF8A20000 + 0x130)
+
+#define WORDINTERFACE (1 << 0)
+#define ULPI_BYPASS_EN_PORT0 (1 << 3)
+#define SS_BURST16_EN (1 << 9)
+#define TEST_WRDATA (0x4)
+#define TEST_ADDR (0x6 << 8)
+#define TEST_WREN (1 << 21)
+#define TEST_CLK (1 << 22)
+#define TEST_RSTN (1 << 23)
+
+#define PERI_CRG46 (0xF8A22000 + 0xb8)
+#define USB2_BUS_CKEN (1<<0)
+#define USB2_OHCI48M_CKEN (1<<1)
+#define USB2_OHCI12M_CKEN (1<<2)
+#define USB2_OTG_UTMI_CKEN (1<<3)
+#define USB2_HST_PHY_CKEN (1<<4)
+#define USB2_UTMI0_CKEN (1<<5)
+#define USB2_BUS_SRST_REQ (1<<12)
+#define USB2_UTMI0_SRST_REQ (1<<13)
+#define USB2_HST_PHY_SYST_REQ (1<<16)
+#define USB2_OTG_PHY_SYST_REQ (1<<17)
+#define USB2_CLK48_SEL (1<<20)
+
+#define PERI_CRG47 (0xF8A22000 + 0xbc)
+#define USB2_PHY01_REF_CKEN (1 << 0)
+#define USB2_PHY2_REF_CKEN (1 << 2)
+#define USB2_PHY01_SRST_REQ (1 << 4)
+#define USB2_PHY2_SRST_REQ (1 << 6)
+#define USB2_PHY01_SRST_TREQ0 (1 << 8)
+#define USB2_PHY01_SRST_TREQ1 (1 << 9)
+#define USB2_PHY2_SRST_TREQ (1 << 10)
+#define USB2_PHY01_REFCLK_SEL (1 << 12)
+#define USB2_PHY2_REFCLK_SEL (1 << 14)
+
+#define REG_START_MODE 0x0000
+#define REG_PERI_STAT 0x0004
+#define REG_PERI_CTRL 0x0008
+#define REG_PERI_CRG26 0x00A8
+#define NF_BOOTBW_MASK (1<<12)
+
+#define HI3798CV200_EHCI_CTRL (PERI_USB0)
+
+/* Generate padding data ranges with unique identifiers. */
+#define ___cat(a,b) a##b
+#define __cat(a,b) ___cat(a,b)
+#define __padding(__words) struct { __u32 __cat(__pad, __COUNTER__)[__words]; }
+
+struct hi3798cv200_ehci_ctrl_regs {
+ u32 peri_usb0;
+ u32 peri_usb1;
+ u32 peri_usb2;
+ u32 peri_usb3;
+ u32 peri_usb4;
+ __padding(0x7e1);
+ u32 peri_crg46;
+ u32 peri_crg47;
+};
+
+#endif
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 0bf8274..a749d0e 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -128,6 +128,12 @@ config USB_EHCI_ZYNQ
---help---
Enable support for Zynq on-chip EHCI USB controller
+config USB_EHCI_POPLAR
+ bool "Support for HI3798cv200 EHCI USB controller"
+ default y
+ ---help---
+ Enable support for Poplar on-chip EHCI USB controller
+
config USB_EHCI_GENERIC
bool "Support for generic EHCI USB controller"
depends on OF_CONTROL
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 58c0cf5..3661636 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o
obj-$(CONFIG_USB_EHCI_VF) += ehci-vf.o
obj-$(CONFIG_USB_EHCI_RMOBILE) += ehci-rmobile.o
obj-$(CONFIG_USB_EHCI_ZYNQ) += ehci-zynq.o
+obj-$(CONFIG_USB_EHCI_POPLAR) += ehci-hi3798cv200.o
# xhci
obj-$(CONFIG_USB_XHCI_HCD) += xhci.o xhci-mem.o xhci-ring.o
diff --git a/drivers/usb/host/ehci-hi3798cv200.c b/drivers/usb/host/ehci-hi3798cv200.c
new file mode 100644
index 0000000..c535de1
--- /dev/null
+++ b/drivers/usb/host/ehci-hi3798cv200.c
@@ -0,0 +1,196 @@
+/*
+ * (C) Copyright 2017 Linaro
+ * Jorge Ramirez-Ortiz <jorge.ramirez-ortiz at linaro.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/hi3798cv200.h>
+#include <asm/io.h>
+
+#include "ehci.h"
+
+static struct hi3798cv200_ehci_ctrl_regs *ctrl = (void *) HI3798CV200_EHCI_CTRL;
+
+static void inno_phy_config_2p_1(void)
+{
+ u32 reg;
+ /* write 0x4 to addr 0x06
+ * config 2P PHY clk output
+ * delay 1ms for waiting PLL stable
+ */
+ reg = TEST_WRDATA|TEST_ADDR|TEST_WREN|TEST_RSTN;
+ writel(reg, &ctrl->peri_usb0);
+ reg = TEST_WRDATA|TEST_ADDR|TEST_WREN|TEST_RSTN|TEST_CLK;
+ writel(reg, &ctrl->peri_usb0);
+ reg = TEST_WRDATA|TEST_ADDR|TEST_WREN|TEST_RSTN;
+ writel(reg, &ctrl->peri_usb0);
+ mdelay(1);
+
+ /* write 0x1c to addr 0x00
+ * 0x00[0] = 0 : close EOP pre-emphasis
+ * 0x00[2] = 1 : open Data pre-emphasis
+ */
+ writel(0xa1001c, &ctrl->peri_usb0);
+ writel(0xe1001c, &ctrl->peri_usb0);
+ writel(0xa1001c, &ctrl->peri_usb0);
+ udelay(20);
+
+ /* write 0x07 to 0x06
+ * {0x06[1:0],0x05[7]} = 110 : Rcomp = 150mV , increase DC level
+ */
+ writel(0xa00607, &ctrl->peri_usb0);
+ writel(0xe00607, &ctrl->peri_usb0);
+ writel(0xa00607, &ctrl->peri_usb0);
+ udelay(20);
+
+ /* write 0x00 to addr 0x07
+ * 0x07[1] = 0 : Keep Rcomp working
+ */
+ writel(0xa10700, &ctrl->peri_usb0);
+ writel(0xe10700, &ctrl->peri_usb0);
+ writel(0xa10700, &ctrl->peri_usb0);
+ udelay(20);
+
+ /* write 0xab to 0x0a
+ * 0x0a[7:5] = 101 : Icomp = 212mV , increase current drive
+ */
+ writel(0xa00aab, &ctrl->peri_usb0);
+ writel(0xe00aab, &ctrl->peri_usb0);
+ writel(0xa00aab, &ctrl->peri_usb0);
+ udelay(20);
+
+ /* write 0x40 to addr 0x11
+ * 0x11[6:5] = 10 : sovle EMI problem, rx_active will
+ * not stay at 1 when error packets received
+ */
+ writel(0xa11140, &ctrl->peri_usb0);
+ writel(0xe11140, &ctrl->peri_usb0);
+ writel(0xa11140, &ctrl->peri_usb0);
+ udelay(20);
+
+ /* write 0x41 to addr 0x10
+ * 0x10[0] = 1 : Comp Mode Select
+ */
+ writel(0xa11041, &ctrl->peri_usb0);
+ writel(0xe11041, &ctrl->peri_usb0);
+ writel(0xa11041, &ctrl->peri_usb0);
+ udelay(20);
+
+ /*
+ * {0x00a[0],0x009[7:6]} = 110 : Eye Diagram Adjust
+ * {0x10a[0],0x109[7:6]} = 000 : Eye Diagram Adjust
+ */
+ writel(0xa0098c, &ctrl->peri_usb0);
+ writel(0xe0098c, &ctrl->peri_usb0);
+ writel(0xa0098c, &ctrl->peri_usb0);
+ writel(0xa10a0a, &ctrl->peri_usb0);
+ writel(0xe10a0a, &ctrl->peri_usb0);
+ writel(0xa10a0a, &ctrl->peri_usb0);
+ udelay(20);
+}
+
+#ifndef CONFIG_DM_USB
+int ehci_hcd_init(int index, enum usb_init_type init,
+ struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+ int reg;
+
+ *hccr = (struct ehci_hccr *) REG_BASE_EHCI;
+ *hcor = (struct ehci_hcor *)( (void *) REG_BASE_EHCI +
+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
+
+ /* reset controller bus/utmi/roothub */
+ reg = readl(&ctrl->peri_crg46);
+ reg |= (USB2_BUS_SRST_REQ
+ | USB2_UTMI0_SRST_REQ
+ | USB2_HST_PHY_SYST_REQ
+ | USB2_OTG_PHY_SYST_REQ);
+ writel(reg, &ctrl->peri_crg46);
+ udelay(200);
+
+ /* reset phy por/utmi */
+ reg = readl(&ctrl->peri_crg47);
+ reg |= (USB2_PHY01_SRST_REQ
+ | USB2_PHY01_SRST_TREQ1);
+ writel(reg, &ctrl->peri_crg47);
+ udelay(200);
+
+ reg = readl(&ctrl->peri_usb3);
+ reg |= ULPI_BYPASS_EN_PORT0;
+ reg &= ~(WORDINTERFACE);
+ reg &= ~(SS_BURST16_EN);
+ writel(reg, &ctrl->peri_usb3);
+ udelay(100);
+
+ /* open ref clk */
+ reg = readl(&ctrl->peri_crg47);
+ reg |= (USB2_PHY01_REF_CKEN);
+ writel(reg, &ctrl->peri_crg47);
+ udelay(300);
+
+ /* cancel power on reset */
+ reg = readl(&ctrl->peri_crg47);
+ reg &= ~(USB2_PHY01_SRST_REQ);
+ writel(reg, &ctrl->peri_crg47);
+ udelay(500);
+
+ inno_phy_config_2p_1();
+
+ /* cancel port reset
+ * delay 10ms for waiting comp circuit stable
+ */
+ reg = readl(&ctrl->peri_crg47);
+ reg &= ~(USB2_PHY01_SRST_TREQ1);
+ writel(reg, &ctrl->peri_crg47);
+ mdelay(10);
+
+ /* open controller clk */
+ reg = readl(&ctrl->peri_crg46);
+ reg |= (USB2_BUS_CKEN
+ | USB2_OHCI48M_CKEN
+ | USB2_OHCI12M_CKEN
+ | USB2_OTG_UTMI_CKEN
+ | USB2_HST_PHY_CKEN
+ | USB2_UTMI0_CKEN);
+ writel(reg, &ctrl->peri_crg46);
+ udelay(200);
+
+ /* cancel control reset */
+ reg = readl(&ctrl->peri_crg46);
+ reg &= ~(USB2_BUS_SRST_REQ
+ | USB2_UTMI0_SRST_REQ
+ | USB2_HST_PHY_SYST_REQ
+ | USB2_OTG_PHY_SYST_REQ);
+ writel(reg, &ctrl->peri_crg46);
+ udelay(200);
+
+
+ return 0;
+}
+
+int ehci_hcd_stop(int index)
+{
+ int reg;
+
+ reg = readl(&ctrl->peri_crg46);
+ reg |= (USB2_BUS_SRST_REQ
+ | USB2_UTMI0_SRST_REQ
+ | USB2_HST_PHY_SYST_REQ);
+ writel(reg, &ctrl->peri_crg46);
+
+ udelay(200);
+
+ reg = readl(&ctrl->peri_crg47);
+ reg |= (USB2_PHY01_SRST_REQ
+ | USB2_PHY01_SRST_TREQ1);
+ writel(reg, &ctrl->peri_crg47);
+
+ udelay(100);
+
+ return 0;
+}
+#else
+error "CONFIG_DM_USB not supported for hi3798cv200"
+#endif
--
2.7.4
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