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mmc: zynq_sdhci: Add common function to set input/output tapdelays 

Remove setting tapdelays for different speeds separately. Instead use
the ITAP and OTAP delay values which are read from the device tree.
If the DT does not contain tap delay values, the predefined values
will be used for the same.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ashok Reddy Soma 2020-10-23 04:59:04 -06:00 committed by Michal Simek
parent d3d880b41a
commit 728d21b8c7
2 changed files with 40 additions and 163 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

198
board/xilinx/zynqmp/tap_delays.c
View File

@ -6,6 +6,7 @@
*/
#include <common.h>
#include <zynqmp_tap_delay.h>
#include <asm/arch/sys_proto.h>
#include <linux/delay.h>
#include <mmc.h>
@ -26,34 +27,9 @@
#define SD1_ITAPDLYENA_MASK 0x01000000
#define SD1_ITAPDLYENA 0x01000000
#define SD0_ITAPDLYSEL_MASK 0x000000FF
#define SD0_ITAPDLYSEL_HSD 0x00000015
#define SD0_ITAPDLYSEL_SD_DDR50 0x0000003D
#define SD0_ITAPDLYSEL_MMC_DDR50 0x00000012
#define SD1_ITAPDLYSEL_MASK 0x00FF0000
#define SD1_ITAPDLYSEL_HSD 0x00150000
#define SD1_ITAPDLYSEL_SD_DDR50 0x003D0000
#define SD1_ITAPDLYSEL_MMC_DDR50 0x00120000
#define SD0_OTAPDLYSEL_MASK 0x0000003F
#define SD0_OTAPDLYSEL_MMC_HSD 0x00000006
#define SD0_OTAPDLYSEL_SD_HSD 0x00000005
#define SD0_OTAPDLYSEL_SDR50 0x00000003
#define SD0_OTAPDLYSEL_SDR104_B0 0x00000003
#define SD0_OTAPDLYSEL_SDR104_B2 0x00000002
#define SD0_OTAPDLYSEL_SD_DDR50 0x00000004
#define SD0_OTAPDLYSEL_MMC_DDR50 0x00000006
#define SD1_OTAPDLYSEL_MASK 0x003F0000
#define SD1_OTAPDLYSEL_MMC_HSD 0x00060000
#define SD1_OTAPDLYSEL_SD_HSD 0x00050000
#define SD1_OTAPDLYSEL_SDR50 0x00030000
#define SD1_OTAPDLYSEL_SDR104_B0 0x00030000
#define SD1_OTAPDLYSEL_SDR104_B2 0x00020000
#define SD1_OTAPDLYSEL_SD_DDR50 0x00040000
#define SD1_OTAPDLYSEL_MMC_DDR50 0x00060000
#define MMC_BANK2 0x2
void zynqmp_dll_reset(u8 deviceid)
{
@ -74,149 +50,49 @@ void zynqmp_dll_reset(u8 deviceid)
zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, 0x0);
}
static void arasan_zynqmp_tap_sdr104(u8 deviceid, u8 timing, u8 bank)
void arasan_zynqmp_set_tapdelay(u8 deviceid, u32 itap_delay, u32 otap_delay)
{
if (deviceid == 0) {
/* Program OTAP */
if (bank == MMC_BANK2)
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_SDR104_B2);
else
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_SDR104_B0);
} else {
/* Program OTAP */
if (bank == MMC_BANK2)
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_SDR104_B2);
else
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_SDR104_B0);
}
}
static void arasan_zynqmp_tap_hs(u8 deviceid, u8 timing, u8 bank)
{
if (deviceid == 0) {
/* Program ITAP */
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK,
SD0_ITAPCHGWIN);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK,
SD0_ITAPDLYENA);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK,
SD0_ITAPDLYSEL_HSD);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, 0x0);
/* Program OTAP */
if (timing == MMC_TIMING_MMC_HS)
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_MMC_HSD);
else
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_SD_HSD);
} else {
/* Program ITAP */
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK,
SD1_ITAPCHGWIN);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK,
SD1_ITAPDLYENA);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK,
SD1_ITAPDLYSEL_HSD);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, 0x0);
/* Program OTAP */
if (timing == MMC_TIMING_MMC_HS)
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_MMC_HSD);
else
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_SD_HSD);
}
}
static void arasan_zynqmp_tap_ddr50(u8 deviceid, u8 timing, u8 bank)
{
if (deviceid == 0) {
/* Program ITAP */
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK,
SD0_ITAPCHGWIN);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK,
SD0_ITAPDLYENA);
if (timing == MMC_TIMING_UHS_DDR50)
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK,
SD0_ITAPDLYSEL_SD_DDR50);
else
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK,
SD0_ITAPDLYSEL_MMC_DDR50);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, 0x0);
/* Program OTAP */
if (timing == MMC_TIMING_UHS_DDR50)
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_SD_DDR50);
else
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_MMC_DDR50);
} else {
/* Program ITAP */
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK,
SD1_ITAPCHGWIN);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK,
SD1_ITAPDLYENA);
if (timing == MMC_TIMING_UHS_DDR50)
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK,
SD1_ITAPDLYSEL_SD_DDR50);
else
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK,
SD1_ITAPDLYSEL_MMC_DDR50);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, 0x0);
/* Program OTAP */
if (timing == MMC_TIMING_UHS_DDR50)
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_SD_DDR50);
else
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_MMC_DDR50);
}
}
static void arasan_zynqmp_tap_sdr50(u8 deviceid, u8 timing, u8 bank)
{
if (deviceid == 0) {
/* Program OTAP */
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
SD0_OTAPDLYSEL_SDR50);
} else {
/* Program OTAP */
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
SD1_OTAPDLYSEL_SDR50);
}
}
void arasan_zynqmp_set_tapdelay(u8 deviceid, u8 timing, u8 bank)
{
if (deviceid == 0)
zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK,
SD0_DLL_RST);
else
/* Program ITAP */
if (itap_delay) {
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK,
SD0_ITAPCHGWIN);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK,
SD0_ITAPDLYENA);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK,
itap_delay);
zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK,
0x0);
}
/* Program OTAP */
if (otap_delay)
zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK,
otap_delay);
zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, 0x0);
} else {
zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK,
SD1_DLL_RST);
/* Program ITAP */
if (itap_delay) {
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK,
SD1_ITAPCHGWIN);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK,
SD1_ITAPDLYENA);
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK,
(itap_delay << 16));
zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK,
0x0);
}
switch (timing) {
case MMC_TIMING_UHS_SDR25:
arasan_zynqmp_tap_hs(deviceid, timing, bank);
break;
case MMC_TIMING_UHS_SDR50:
arasan_zynqmp_tap_sdr50(deviceid, timing, bank);
break;
case MMC_TIMING_UHS_SDR104:
case MMC_TIMING_MMC_HS200:
arasan_zynqmp_tap_sdr104(deviceid, timing, bank);
break;
case MMC_TIMING_UHS_DDR50:
arasan_zynqmp_tap_ddr50(deviceid, timing, bank);
break;
}
/* Program OTAP */
if (otap_delay)
zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK,
(otap_delay << 16));
if (deviceid == 0)
zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, 0x0);
else
zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, 0x0);
}
}

5
include/zynqmp_tap_delay.h
View File

@ -10,10 +10,11 @@
#ifdef CONFIG_ARCH_ZYNQMP
void zynqmp_dll_reset(u8 deviceid);
void arasan_zynqmp_set_tapdelay(u8 device_id, u8 uhsmode, u8 bank);
void arasan_zynqmp_set_tapdelay(u8 device_id, u32 itap_delay, u32 otap_delay);
#else
inline void zynqmp_dll_reset(u8 deviceid) {}
inline void arasan_zynqmp_set_tapdelay(u8 device_id, u8 uhsmode, u8 bank) {}
inline void arasan_zynqmp_set_tapdelay(u8 device_id, u32 itap_delay,
u32 otap_delay) {}
#endif
#endif