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mmc: sdhci: support new phy IP 

The new phy IP is designed by rockchip.

Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>
Change-Id: I5a84bcc6fff7aaf0bc848cdb70b78a57f471e51e
This commit is contained in:
Jason Zhu 2020-10-26 17:37:31 +08:00 committed by Jianhong Chen
parent 05f3b0ab30
commit b7b235505b
1 changed files with 83 additions and 0 deletions
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83
drivers/mmc/rockchip_sdhci.c
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@ -36,6 +36,30 @@ DECLARE_GLOBAL_DATA_PTR;
#define PHYCTRL_FREQSEL_100M 0x2
#define PHYCTRL_FREQSEL_150M 0x3
/* Rockchip specific Registers */
#define DWCMSHC_EMMC_DLL_CTRL 0x800
#define DWCMSHC_EMMC_DLL_TXCLK 0x804
#define DWCMSHC_EMMC_DLL_RXCLK 0x808
#define DWCMSHC_EMMC_DLL_STRBIN 0x80c
#define DWCMSHC_EMMC_DLL_STATUS0 0x820
#define DWCMSHC_EMMC_DLL_START BIT(0)
#define DWCMSHC_EMMC_DLL_RXCLK_SRCSEL 29
#define DWCMSHC_EMMC_DLL_START_POINT 16
#define DWCMSHC_EMMC_DLL_INC 8
#define DWCMSHC_EMMC_DLL_DLYENA BIT(27)
#define DLL_RXCLK_TAPNUM_DEFAULT 0x3
#define DLL_STRBIN_TAPNUM_DEFAULT 0x3
#define DLL_RXCLK_TAPNUM_FROM_SW BIT(24)
#define DWCMSHC_EMMC_DLL_LOCKED BIT(8)
#define DWCMSHC_EMMC_DLL_TIMEOUT BIT(9)
#define DLL_RXCLK_NO_INVERTER 1
#define DLL_RXCLK_INVERTER 0
#define DWCMSHC_ENHANCED_STROBE BIT(8)
#define DLL_LOCK_WO_TMOUT(x) \
((((x) & DWCMSHC_EMMC_DLL_LOCKED) == DWCMSHC_EMMC_DLL_LOCKED) && \
(((x) & DWCMSHC_EMMC_DLL_TIMEOUT) == 0))
#define ROCKCHIP_MAX_CLKS 3
struct rockchip_sdhc_plat {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct dtd_rockchip_rk3399_sdhci_5_1 dtplat;
@ -273,6 +297,55 @@ static int rk3399_sdhci_emmc_set_clock(struct sdhci_host *host, unsigned int clo
return 0;
}
static int rk3568_emmc_phy_init(struct udevice *dev)
{
struct rockchip_sdhc *prv = dev_get_priv(dev);
struct sdhci_host *host = &prv->host;
u32 extra;
int timeout = 500;
sdhci_writel(host, BIT(1), DWCMSHC_EMMC_DLL_CTRL);
udelay(1);
sdhci_writel(host, 0, DWCMSHC_EMMC_DLL_CTRL);
/* Init DLL settings */
extra = 0x5 << DWCMSHC_EMMC_DLL_START_POINT |
0x2 << DWCMSHC_EMMC_DLL_INC |
DWCMSHC_EMMC_DLL_START;
sdhci_writel(host, extra, DWCMSHC_EMMC_DLL_CTRL);
while(1) {
if (timeout < 0)
return ETIMEDOUT;
if (sdhci_readl(host, DWCMSHC_EMMC_DLL_STATUS0) == DLL_LOCK_WO_TMOUT(extra))
break;
udelay(1);
timeout--;
}
/* FixMe: clk inverter? */
extra = DWCMSHC_EMMC_DLL_DLYENA |
DLL_RXCLK_NO_INVERTER << DWCMSHC_EMMC_DLL_RXCLK_SRCSEL;
sdhci_writel(host, extra, DWCMSHC_EMMC_DLL_RXCLK);
extra = DWCMSHC_EMMC_DLL_DLYENA |
DLL_RXCLK_TAPNUM_DEFAULT |
DLL_RXCLK_TAPNUM_FROM_SW;
sdhci_writel(host, extra, DWCMSHC_EMMC_DLL_TXCLK);
extra = DWCMSHC_EMMC_DLL_DLYENA |
DLL_STRBIN_TAPNUM_DEFAULT;
sdhci_writel(host, extra, DWCMSHC_EMMC_DLL_STRBIN);
return 0;
}
static int rk3568_sdhci_emmc_set_clock(struct sdhci_host *host, unsigned int clock)
{
return rk3399_emmc_set_clock(host, clock);
}
static int rk3568_emmc_get_phy(struct udevice *dev)
{
return 0;
}
static int arasan_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
{
struct rockchip_sdhc *priv =
@ -387,11 +460,21 @@ static const struct sdhci_data arasan_data = {
.emmc_phy_init = rk3399_emmc_phy_init,
};
static const struct sdhci_data snps_data = {
.emmc_set_clock = rk3568_sdhci_emmc_set_clock,
.get_phy = rk3568_emmc_get_phy,
.emmc_phy_init = rk3568_emmc_phy_init,
};
static const struct udevice_id arasan_sdhci_ids[] = {
{
.compatible = "arasan,sdhci-5.1",
.data = (ulong)&arasan_data,
},
{
.compatible = "snps,dwcmshc-sdhci",
.data = (ulong)&snps_data,
},
{ }
};