mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
|
/*
|
||
|
|
* Copyright 2016 Rockchip Electronics Co., Ltd
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <libfdt.h>
|
||
|
|
|
||
|
|
#include "../gadget/dwc2_udc_otg_priv.h"
|
||
|
|
|
||
|
|
DECLARE_GLOBAL_DATA_PTR;
|
||
|
|
|
||
|
|
#define BIT_WRITEABLE_SHIFT 16
|
||
|
|
|
||
|
|
struct usb2phy_reg {
|
||
|
|
unsigned int offset;
|
||
|
|
unsigned int bitend;
|
||
|
|
unsigned int bitstart;
|
||
|
|
unsigned int disable;
|
||
|
|
unsigned int enable;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct rockchip_usb2_phy_cfg: usb-phy port configuration
|
||
|
|
* @port_reset: usb otg per-port reset register
|
||
|
|
* @soft_con: software control usb otg register
|
||
|
|
* @suspend: phy suspend register
|
||
|
|
*/
|
||
|
|
struct rockchip_usb2_phy_cfg {
|
||
|
|
struct usb2phy_reg port_reset;
|
||
|
|
struct usb2phy_reg soft_con;
|
||
|
|
struct usb2phy_reg suspend;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct rockchip_usb2_phy_dt_id {
|
||
|
|
char compatible[128];
|
||
|
|
const void *data;
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct rockchip_usb2_phy_cfg rk3288_pdata = {
|
||
|
|
.port_reset = {0x00, 12, 12, 0, 1},
|
||
|
|
.soft_con = {0x08, 2, 2, 0, 1},
|
||
|
|
.suspend = {0x0c, 5, 0, 0x01, 0x2A},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct rockchip_usb2_phy_dt_id rockchip_usb2_phy_dt_ids[] = {
|
||
|
|
{ .compatible = "rockchip,rk3288-usb-phy", .data = &rk3288_pdata },
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
|
||
|
|
static void property_enable(struct dwc2_plat_otg_data *pdata,
|
||
|
|
const struct usb2phy_reg *reg, bool en)
|
||
|
|
{
|
||
|
|
unsigned int val, mask, tmp;
|
||
|
|
|
||
|
|
tmp = en ? reg->enable : reg->disable;
|
||
|
|
mask = GENMASK(reg->bitend, reg->bitstart);
|
||
|
|
val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
|
||
|
|
|
||
|
|
writel(val, pdata->regs_phy + reg->offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void otg_phy_init(struct dwc2_udc *dev)
|
||
|
|
{
|
||
|
|
struct dwc2_plat_otg_data *pdata = dev->pdata;
|
||
|
|
struct rockchip_usb2_phy_cfg *phy_cfg = NULL;
|
||
|
|
struct rockchip_usb2_phy_dt_id *of_id;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(rockchip_usb2_phy_dt_ids); i++) {
|
||
|
|
of_id = &rockchip_usb2_phy_dt_ids[i];
|
||
|
|
if (fdt_node_check_compatible(gd->fdt_blob, pdata->phy_of_node,
|
||
|
|
of_id->compatible) == 0) {
|
||
|
|
phy_cfg = (struct rockchip_usb2_phy_cfg *)of_id->data;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!phy_cfg) {
|
||
|
|
debug("Can't find device platform data\n");
|
||
|
|
|
||
|
|
hang();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
pdata->priv = phy_cfg;
|
||
|
|
/* disable software control */
|
||
|
|
property_enable(pdata, &phy_cfg->soft_con, false);
|
||
|
|
|
||
|
|
/* reset otg port */
|
||
|
|
property_enable(pdata, &phy_cfg->port_reset, true);
|
||
|
|
mdelay(1);
|
||
|
|
property_enable(pdata, &phy_cfg->port_reset, false);
|
||
|
|
udelay(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
void otg_phy_off(struct dwc2_udc *dev)
|
||
|
|
{
|
||
|
|
struct dwc2_plat_otg_data *pdata = dev->pdata;
|
||
|
|
struct rockchip_usb2_phy_cfg *phy_cfg = pdata->priv;
|
||
|
|
|
||
|
|
/* enable software control */
|
||
|
|
property_enable(pdata, &phy_cfg->soft_con, true);
|
||
|
|
/* enter suspend */
|
||
|
|
property_enable(pdata, &phy_cfg->suspend, true);
|
||
|
|
}
|