@ -7,8 +7,10 @@
# include <common.h>
# include <linux/io.h>
# include <linux/iopoll.h>
# include <linux/sizes.h>
# include <dm/device.h>
# include <libfdt.h>
# include <mmc.h>
# include <sdhci.h>
@ -17,7 +19,7 @@
# define SDHCI_CDNS_HRS04_ACK BIT(26)
# define SDHCI_CDNS_HRS04_RD BIT(25)
# define SDHCI_CDNS_HRS04_WR BIT(24)
# define SDHCI_CDNS_HRS04_RDATA_SHIFT 12
# define SDHCI_CDNS_HRS04_RDATA_SHIFT 16
# define SDHCI_CDNS_HRS04_WDATA_SHIFT 8
# define SDHCI_CDNS_HRS04_ADDR_SHIFT 0
@ -34,6 +36,9 @@
# define SDHCI_CDNS_PHY_DLY_EMMC_LEGACY 0x06
# define SDHCI_CDNS_PHY_DLY_EMMC_SDR 0x07
# define SDHCI_CDNS_PHY_DLY_EMMC_DDR 0x08
# define SDHCI_CDNS_PHY_DLY_SDCLK 0x0b
# define SDHCI_CDNS_PHY_DLY_HSMMC 0x0c
# define SDHCI_CDNS_PHY_DLY_STROBE 0x0d
struct sdhci_cdns_plat {
struct mmc_config cfg ;
@ -41,11 +46,31 @@ struct sdhci_cdns_plat {
void __iomem * hrs_addr ;
} ;
static void sdhci_cdns_write_phy_reg ( struct sdhci_cdns_plat * plat ,
u8 addr , u8 data )
struct sdhci_cdns_phy_cfg {
const char * property ;
u8 addr ;
} ;
static const struct sdhci_cdns_phy_cfg sdhci_cdns_phy_cfgs [ ] = {
{ " cdns,phy-input-delay-sd-highspeed " , SDHCI_CDNS_PHY_DLY_SD_HS , } ,
{ " cdns,phy-input-delay-legacy " , SDHCI_CDNS_PHY_DLY_SD_DEFAULT , } ,
{ " cdns,phy-input-delay-sd-uhs-sdr12 " , SDHCI_CDNS_PHY_DLY_UHS_SDR12 , } ,
{ " cdns,phy-input-delay-sd-uhs-sdr25 " , SDHCI_CDNS_PHY_DLY_UHS_SDR25 , } ,
{ " cdns,phy-input-delay-sd-uhs-sdr50 " , SDHCI_CDNS_PHY_DLY_UHS_SDR50 , } ,
{ " cdns,phy-input-delay-sd-uhs-ddr50 " , SDHCI_CDNS_PHY_DLY_UHS_DDR50 , } ,
{ " cdns,phy-input-delay-mmc-highspeed " , SDHCI_CDNS_PHY_DLY_EMMC_SDR , } ,
{ " cdns,phy-input-delay-mmc-ddr " , SDHCI_CDNS_PHY_DLY_EMMC_DDR , } ,
{ " cdns,phy-dll-delay-sdclk " , SDHCI_CDNS_PHY_DLY_SDCLK , } ,
{ " cdns,phy-dll-delay-sdclk-hsmmc " , SDHCI_CDNS_PHY_DLY_HSMMC , } ,
{ " cdns,phy-dll-delay-strobe " , SDHCI_CDNS_PHY_DLY_STROBE , } ,
} ;
static int sdhci_cdns_write_phy_reg ( struct sdhci_cdns_plat * plat ,
u8 addr , u8 data )
{
void __iomem * reg = plat - > hrs_addr + SDHCI_CDNS_HRS04 ;
u32 tmp ;
int ret ;
tmp = ( data < < SDHCI_CDNS_HRS04_WDATA_SHIFT ) |
( addr < < SDHCI_CDNS_HRS04_ADDR_SHIFT ) ;
@ -54,17 +79,36 @@ static void sdhci_cdns_write_phy_reg(struct sdhci_cdns_plat *plat,
tmp | = SDHCI_CDNS_HRS04_WR ;
writel ( tmp , reg ) ;
ret = readl_poll_timeout ( reg , tmp , tmp & SDHCI_CDNS_HRS04_ACK , 10 ) ;
if ( ret )
return ret ;
tmp & = ~ SDHCI_CDNS_HRS04_WR ;
writel ( tmp , reg ) ;
return 0 ;
}
static void sdhci_cdns_phy_init ( struct sdhci_cdns_plat * plat )
static int sdhci_cdns_phy_init ( struct sdhci_cdns_plat * plat ,
const void * fdt , int nodeoffset )
{
sdhci_cdns_write_phy_reg ( plat , SDHCI_CDNS_PHY_DLY_SD_HS , 4 ) ;
sdhci_cdns_write_phy_reg ( plat , SDHCI_CDNS_PHY_DLY_SD_DEFAULT , 4 ) ;
sdhci_cdns_write_phy_reg ( plat , SDHCI_CDNS_PHY_DLY_EMMC_LEGACY , 9 ) ;
sdhci_cdns_write_phy_reg ( plat , SDHCI_CDNS_PHY_DLY_EMMC_SDR , 2 ) ;
sdhci_cdns_write_phy_reg ( plat , SDHCI_CDNS_PHY_DLY_EMMC_DDR , 3 ) ;
const u32 * prop ;
int ret , i ;
for ( i = 0 ; i < ARRAY_SIZE ( sdhci_cdns_phy_cfgs ) ; i + + ) {
prop = fdt_getprop ( fdt , nodeoffset ,
sdhci_cdns_phy_cfgs [ i ] . property , NULL ) ;
if ( ! prop )
continue ;
ret = sdhci_cdns_write_phy_reg ( plat ,
sdhci_cdns_phy_cfgs [ i ] . addr ,
fdt32_to_cpu ( * prop ) ) ;
if ( ret )
return ret ;
}
return 0 ;
}
static int sdhci_cdns_bind ( struct udevice * dev )
@ -76,6 +120,7 @@ static int sdhci_cdns_bind(struct udevice *dev)
static int sdhci_cdns_probe ( struct udevice * dev )
{
DECLARE_GLOBAL_DATA_PTR ;
struct mmc_uclass_priv * upriv = dev_get_uclass_priv ( dev ) ;
struct sdhci_cdns_plat * plat = dev_get_platdata ( dev ) ;
struct sdhci_host * host = dev_get_priv ( dev ) ;
@ -94,7 +139,9 @@ static int sdhci_cdns_probe(struct udevice *dev)
host - > ioaddr = plat - > hrs_addr + SDHCI_CDNS_SRS_BASE ;
host - > quirks | = SDHCI_QUIRK_WAIT_SEND_CMD ;
sdhci_cdns_phy_init ( plat ) ;
ret = sdhci_cdns_phy_init ( plat , gd - > fdt_blob , dev - > of_offset ) ;
if ( ret )
return ret ;
ret = sdhci_setup_cfg ( & plat - > cfg , host , 0 , 0 ) ;
if ( ret )
Tom Rini
8 years ago