#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <asm/types.h>
+#include <wait_bit.h>
-#if defined(CONFIG_MX6QDL) || defined(CONFIG_MX6Q) || defined(CONFIG_MX6D)
-
-static int wait_for_bit(void *reg, const uint32_t mask, bool set)
-{
- unsigned int timeout = 1000;
- u32 val;
-
- while (--timeout) {
- val = readl(reg);
- if (!set)
- val = ~val;
-
- if ((val & mask) == mask)
- return 0;
-
- udelay(1);
- }
-
- printf("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
- __func__, reg, mask, set);
- hang(); /* DRAM couldn't be calibrated, game over :-( */
-}
-
+#if defined(CONFIG_MX6_DDRCAL)
static void reset_read_data_fifos(void)
{
struct mmdc_p_regs *mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
/* Reset data FIFOs twice. */
setbits_le32(&mmdc0->mpdgctrl0, 1 << 31);
- wait_for_bit(&mmdc0->mpdgctrl0, 1 << 31, 0);
+ wait_for_bit("MMDC", &mmdc0->mpdgctrl0, 1 << 31, 0, 100, 0);
setbits_le32(&mmdc0->mpdgctrl0, 1 << 31);
- wait_for_bit(&mmdc0->mpdgctrl0, 1 << 31, 0);
+ wait_for_bit("MMDC", &mmdc0->mpdgctrl0, 1 << 31, 0, 100, 0);
}
static void precharge_all(const bool cs0_enable, const bool cs1_enable)
*/
if (cs0_enable) { /* CS0 */
writel(0x04008050, &mmdc0->mdscr);
- wait_for_bit(&mmdc0->mdscr, 1 << 14, 1);
+ wait_for_bit("MMDC", &mmdc0->mdscr, 1 << 14, 1, 100, 0);
}
if (cs1_enable) { /* CS1 */
writel(0x04008058, &mmdc0->mdscr);
- wait_for_bit(&mmdc0->mdscr, 1 << 14, 1);
+ wait_for_bit("MMDC", &mmdc0->mdscr, 1 << 14, 1, 100, 0);
}
}
writel(val_ctrl, reg_ctrl);
}
-int mmdc_do_write_level_calibration(void)
+int mmdc_do_write_level_calibration(struct mx6_ddr_sysinfo const *sysinfo)
{
struct mmdc_p_regs *mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
struct mmdc_p_regs *mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR;
u32 esdmisc_val, zq_val;
u32 errors = 0;
- u32 ldectrl[4];
+ u32 ldectrl[4] = {0};
u32 ddr_mr1 = 0x4;
+ u32 rwalat_max;
/*
* Stash old values in case calibration fails,
*/
ldectrl[0] = readl(&mmdc0->mpwldectrl0);
ldectrl[1] = readl(&mmdc0->mpwldectrl1);
- ldectrl[2] = readl(&mmdc1->mpwldectrl0);
- ldectrl[3] = readl(&mmdc1->mpwldectrl1);
+ if (sysinfo->dsize == 2) {
+ ldectrl[2] = readl(&mmdc1->mpwldectrl0);
+ ldectrl[3] = readl(&mmdc1->mpwldectrl1);
+ }
/* disable DDR logic power down timer */
clrbits_le32(&mmdc0->mdpdc, 0xff00);
writel(zq_val & ~0x3, &mmdc0->mpzqhwctrl);
/* 3. increase walat and ralat to maximum */
- setbits_le32(&mmdc0->mdmisc,
- (1 << 6) | (1 << 7) | (1 << 8) | (1 << 16) | (1 << 17));
- setbits_le32(&mmdc1->mdmisc,
- (1 << 6) | (1 << 7) | (1 << 8) | (1 << 16) | (1 << 17));
+ rwalat_max = (1 << 6) | (1 << 7) | (1 << 8) | (1 << 16) | (1 << 17);
+ setbits_le32(&mmdc0->mdmisc, rwalat_max);
+ if (sysinfo->dsize == 2)
+ setbits_le32(&mmdc1->mdmisc, rwalat_max);
/*
* 4 & 5. Configure the external DDR device to enter write-leveling
* mode through Load Mode Register command.
* 7. Upon completion of this process the MMDC de-asserts
* the MPWLGCR[HW_WL_EN]
*/
- wait_for_bit(&mmdc0->mpwlgcr, 1 << 0, 0);
+ wait_for_bit("MMDC", &mmdc0->mpwlgcr, 1 << 0, 0, 100, 0);
/*
* 8. check for any errors: check both PHYs for x64 configuration,
*/
if (readl(&mmdc0->mpwlgcr) & 0x00000F00)
errors |= 1;
- if (readl(&mmdc1->mpwlgcr) & 0x00000F00)
- errors |= 2;
+ if (sysinfo->dsize == 2)
+ if (readl(&mmdc1->mpwlgcr) & 0x00000F00)
+ errors |= 2;
debug("Ending write leveling calibration. Error mask: 0x%x\n", errors);
/* check to see if cal failed */
if ((readl(&mmdc0->mpwldectrl0) == 0x001F001F) &&
(readl(&mmdc0->mpwldectrl1) == 0x001F001F) &&
- (readl(&mmdc1->mpwldectrl0) == 0x001F001F) &&
- (readl(&mmdc1->mpwldectrl1) == 0x001F001F)) {
+ ((sysinfo->dsize < 2) ||
+ ((readl(&mmdc1->mpwldectrl0) == 0x001F001F) &&
+ (readl(&mmdc1->mpwldectrl1) == 0x001F001F)))) {
debug("Cal seems to have soft-failed due to memory not supporting write leveling on all channels. Restoring original write leveling values.\n");
writel(ldectrl[0], &mmdc0->mpwldectrl0);
writel(ldectrl[1], &mmdc0->mpwldectrl1);
- writel(ldectrl[2], &mmdc1->mpwldectrl0);
- writel(ldectrl[3], &mmdc1->mpwldectrl1);
+ if (sysinfo->dsize == 2) {
+ writel(ldectrl[2], &mmdc1->mpwldectrl0);
+ writel(ldectrl[3], &mmdc1->mpwldectrl1);
+ }
errors |= 4;
}
readl(&mmdc0->mpwldectrl0));
debug("\tMMDC_MPWLDECTRL1 after write level cal: 0x%08X\n",
readl(&mmdc0->mpwldectrl1));
- debug("\tMMDC_MPWLDECTRL0 after write level cal: 0x%08X\n",
- readl(&mmdc1->mpwldectrl0));
- debug("\tMMDC_MPWLDECTRL1 after write level cal: 0x%08X\n",
- readl(&mmdc1->mpwldectrl1));
+ if (sysinfo->dsize == 2) {
+ debug("\tMMDC_MPWLDECTRL0 after write level cal: 0x%08X\n",
+ readl(&mmdc1->mpwldectrl0));
+ debug("\tMMDC_MPWLDECTRL1 after write level cal: 0x%08X\n",
+ readl(&mmdc1->mpwldectrl1));
+ }
/* We must force a readback of these values, to get them to stick */
readl(&mmdc0->mpwldectrl0);
readl(&mmdc0->mpwldectrl1);
- readl(&mmdc1->mpwldectrl0);
- readl(&mmdc1->mpwldectrl1);
+ if (sysinfo->dsize == 2) {
+ readl(&mmdc1->mpwldectrl0);
+ readl(&mmdc1->mpwldectrl1);
+ }
/* enable DDR logic power down timer: */
setbits_le32(&mmdc0->mdpdc, 0x00005500);
return errors;
}
-int mmdc_do_dqs_calibration(void)
+int mmdc_do_dqs_calibration(struct mx6_ddr_sysinfo const *sysinfo)
{
struct mmdc_p_regs *mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
struct mmdc_p_regs *mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR;
bool cs0_enable_initial;
bool cs1_enable_initial;
u32 esdmisc_val;
- u32 bus_size;
u32 temp_ref;
u32 pddword = 0x00ffff00; /* best so far, place into MPPDCMPR1 */
u32 errors = 0;
writel(0x00008028, &mmdc0->mdscr);
/* poll to make sure the con_ack bit was asserted */
- wait_for_bit(&mmdc0->mdscr, 1 << 14, 1);
+ wait_for_bit("MMDC", &mmdc0->mdscr, 1 << 14, 1, 100, 0);
/*
* Check MDMISC register CALIB_PER_CS to see which CS calibration
cs0_enable = readl(&mmdc0->mdctl) & 0x80000000;
cs1_enable = readl(&mmdc0->mdctl) & 0x40000000;
- /* Check to see what the data bus size is */
- bus_size = (readl(&mmdc0->mdctl) & 0x30000) >> 16;
- debug("Data bus size: %d (%d bits)\n", bus_size, 1 << (bus_size + 4));
-
precharge_all(cs0_enable, cs1_enable);
/* Write the pre-defined value into MPPDCMPR1 */
* this bit until it clears to indicate completion of the write access.
*/
setbits_le32(&mmdc0->mpswdar0, 1);
- wait_for_bit(&mmdc0->mpswdar0, 1 << 0, 0);
+ wait_for_bit("MMDC", &mmdc0->mpswdar0, 1 << 0, 0, 100, 0);
/* Set the RD_DL_ABS# bits to their default values
* (will be calibrated later in the read delay-line calibration).
* Both PHYs for x64 configuration, if x32, do only PHY0.
*/
writel(initdelay, &mmdc0->mprddlctl);
- if (bus_size == 0x2)
+ if (sysinfo->dsize == 0x2)
writel(initdelay, &mmdc1->mprddlctl);
/* Force a measurment, for previous delay setup to take effect. */
- force_delay_measurement(bus_size);
+ force_delay_measurement(sysinfo->dsize);
/*
* ***************************
* 16 before comparing read data.
*/
setbits_le32(&mmdc0->mpdgctrl0, 1 << 30);
+ if (sysinfo->dsize == 2)
+ setbits_le32(&mmdc1->mpdgctrl0, 1 << 30);
/* Set bit 28 to start automatic read DQS gating calibration */
setbits_le32(&mmdc0->mpdgctrl0, 5 << 28);
/* Poll for completion. MPDGCTRL0[HW_DG_EN] should be 0 */
- wait_for_bit(&mmdc0->mpdgctrl0, 1 << 28, 0);
+ wait_for_bit("MMDC", &mmdc0->mpdgctrl0, 1 << 28, 0, 100, 0);
/*
* Check to see if any errors were encountered during calibration
if (readl(&mmdc0->mpdgctrl0) & 0x00001000)
errors |= 1;
- if ((bus_size == 0x2) && (readl(&mmdc1->mpdgctrl0) & 0x00001000))
+ if ((sysinfo->dsize == 0x2) && (readl(&mmdc1->mpdgctrl0) & 0x00001000))
errors |= 2;
+ /* now disable mpdgctrl0[DG_CMP_CYC] */
+ clrbits_le32(&mmdc0->mpdgctrl0, 1 << 30);
+ if (sysinfo->dsize == 2)
+ clrbits_le32(&mmdc1->mpdgctrl0, 1 << 30);
+
/*
* DQS gating absolute offset should be modified from
* reflecting (HW_DG_LOWx + HW_DG_UPx)/2 to
&mmdc0->mpdgctrl0);
modify_dg_result(&mmdc0->mpdghwst2, &mmdc0->mpdghwst3,
&mmdc0->mpdgctrl1);
- if (bus_size == 0x2) {
+ if (sysinfo->dsize == 0x2) {
modify_dg_result(&mmdc1->mpdghwst0, &mmdc1->mpdghwst1,
&mmdc1->mpdgctrl0);
modify_dg_result(&mmdc1->mpdghwst2, &mmdc1->mpdghwst3,
* setting MPRDDLHWCTL[HW_RD_DL_EN] = 0. Also, ensure that
* no error bits were set.
*/
- wait_for_bit(&mmdc0->mprddlhwctl, 1 << 4, 0);
+ wait_for_bit("MMDC", &mmdc0->mprddlhwctl, 1 << 4, 0, 100, 0);
/* check both PHYs for x64 configuration, if x32, check only PHY0 */
if (readl(&mmdc0->mprddlhwctl) & 0x0000000f)
errors |= 4;
- if ((bus_size == 0x2) && (readl(&mmdc1->mprddlhwctl) & 0x0000000f))
+ if ((sysinfo->dsize == 0x2) &&
+ (readl(&mmdc1->mprddlhwctl) & 0x0000000f))
errors |= 8;
debug("Ending Read Delay calibration. Error mask: 0x%x\n", errors);
* Both PHYs for x64 configuration, if x32, do only PHY0.
*/
writel(initdelay, &mmdc0->mpwrdlctl);
- if (bus_size == 0x2)
+ if (sysinfo->dsize == 0x2)
writel(initdelay, &mmdc1->mpwrdlctl);
/*
* XXX This isn't in the manual. Force a measurement,
* for previous delay setup to effect.
*/
- force_delay_measurement(bus_size);
+ force_delay_measurement(sysinfo->dsize);
/*
* 9. 10. Start the automatic write calibration process
* by setting MPWRDLHWCTL[HW_WR_DL_EN] = 0.
* Also, ensure that no error bits were set.
*/
- wait_for_bit(&mmdc0->mpwrdlhwctl, 1 << 4, 0);
+ wait_for_bit("MMDC", &mmdc0->mpwrdlhwctl, 1 << 4, 0, 100, 0);
/* Check both PHYs for x64 configuration, if x32, check only PHY0 */
if (readl(&mmdc0->mpwrdlhwctl) & 0x0000000f)
errors |= 16;
- if ((bus_size == 0x2) && (readl(&mmdc1->mpwrdlhwctl) & 0x0000000f))
+ if ((sysinfo->dsize == 0x2) &&
+ (readl(&mmdc1->mpwrdlhwctl) & 0x0000000f))
errors |= 32;
debug("Ending Write Delay calibration. Error mask: 0x%x\n", errors);
writel(0x0, &mmdc0->mdscr); /* CS0 */
/* Poll to make sure the con_ack bit is clear */
- wait_for_bit(&mmdc0->mdscr, 1 << 14, 0);
+ wait_for_bit("MMDC", &mmdc0->mdscr, 1 << 14, 0, 100, 0);
/*
* Print out the registers that were updated as a result
debug("Read DQS gating calibration:\n");
debug("\tMPDGCTRL0 PHY0 = 0x%08X\n", readl(&mmdc0->mpdgctrl0));
debug("\tMPDGCTRL1 PHY0 = 0x%08X\n", readl(&mmdc0->mpdgctrl1));
- debug("\tMPDGCTRL0 PHY1 = 0x%08X\n", readl(&mmdc1->mpdgctrl0));
- debug("\tMPDGCTRL1 PHY1 = 0x%08X\n", readl(&mmdc1->mpdgctrl1));
+ if (sysinfo->dsize == 2) {
+ debug("\tMPDGCTRL0 PHY1 = 0x%08X\n", readl(&mmdc1->mpdgctrl0));
+ debug("\tMPDGCTRL1 PHY1 = 0x%08X\n", readl(&mmdc1->mpdgctrl1));
+ }
debug("Read calibration:\n");
debug("\tMPRDDLCTL PHY0 = 0x%08X\n", readl(&mmdc0->mprddlctl));
- debug("\tMPRDDLCTL PHY1 = 0x%08X\n", readl(&mmdc1->mprddlctl));
+ if (sysinfo->dsize == 2)
+ debug("\tMPRDDLCTL PHY1 = 0x%08X\n", readl(&mmdc1->mprddlctl));
debug("Write calibration:\n");
debug("\tMPWRDLCTL PHY0 = 0x%08X\n", readl(&mmdc0->mpwrdlctl));
- debug("\tMPWRDLCTL PHY1 = 0x%08X\n", readl(&mmdc1->mpwrdlctl));
+ if (sysinfo->dsize == 2)
+ debug("\tMPWRDLCTL PHY1 = 0x%08X\n", readl(&mmdc1->mpwrdlctl));
/*
* Registers below are for debugging purposes. These print out
debug("\tMPDGHWST1 PHY0 = 0x%08x\n", readl(&mmdc0->mpdghwst1));
debug("\tMPDGHWST2 PHY0 = 0x%08x\n", readl(&mmdc0->mpdghwst2));
debug("\tMPDGHWST3 PHY0 = 0x%08x\n", readl(&mmdc0->mpdghwst3));
- debug("\tMPDGHWST0 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst0));
- debug("\tMPDGHWST1 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst1));
- debug("\tMPDGHWST2 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst2));
- debug("\tMPDGHWST3 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst3));
+ if (sysinfo->dsize == 2) {
+ debug("\tMPDGHWST0 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst0));
+ debug("\tMPDGHWST1 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst1));
+ debug("\tMPDGHWST2 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst2));
+ debug("\tMPDGHWST3 PHY1 = 0x%08x\n", readl(&mmdc1->mpdghwst3));
+ }
debug("Final do_dqs_calibration error mask: 0x%x\n", errors);
#define MR(val, ba, cmd, cs1) \
((val << 16) | (1 << 15) | (cmd << 4) | (cs1 << 3) | ba)
#define MMDC1(entry, value) do { \
- if (!is_cpu_type(MXC_CPU_MX6SX) && !is_cpu_type(MXC_CPU_MX6UL) && \
- !is_cpu_type(MXC_CPU_MX6SL)) \
+ if (!is_mx6sx() && !is_mx6ul() && !is_mx6sl()) \
mmdc1->entry = value; \
} while (0)
mmdc0->mpzqhwctrl = val;
/* Step 12: Configure and activate periodic refresh */
- mmdc0->mdref = (0 << 14) | /* REF_SEL: Periodic refresh cycle: 64kHz */
- (3 << 11); /* REFR: Refresh Rate - 4 refreshes */
+ mmdc0->mdref = (sysinfo->refsel << 14) | (sysinfo->refr << 11);
/* Step 13: Deassert config request - init complete */
mmdc0->mdscr = 0x00000000;
u16 mem_speed = ddr3_cfg->mem_speed;
mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
- if (!is_cpu_type(MXC_CPU_MX6SX) && !is_cpu_type(MXC_CPU_MX6UL) &&
- !is_cpu_type(MXC_CPU_MX6SL))
+ if (!is_mx6sx() && !is_mx6ul() && !is_mx6sl())
mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR;
/* Limit mem_speed for MX6D/MX6Q */
- if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) {
+ if (is_mx6dq() || is_mx6dqp()) {
if (mem_speed > 1066)
mem_speed = 1066; /* 1066 MT/s */
* Data rate of 1066 MT/s requires 533 MHz DDR3 clock, but MX6D/Q supports
* up to 528 MHz, so reduce the clock to fit chip specs
*/
- if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) {
+ if (is_mx6dq() || is_mx6dqp()) {
if (clock > 528)
clock = 528; /* 528 MHz */
}
MMDC1(mpzqhwctrl, val);
/* Step 12: Configure and activate periodic refresh */
- mmdc0->mdref = (1 << 14) | /* REF_SEL: Periodic refresh cycle: 32kHz */
- (7 << 11); /* REFR: Refresh Rate - 8 refreshes */
+ mmdc0->mdref = (sysinfo->refsel << 14) | (sysinfo->refr << 11);
/* Step 13: Deassert config request - init complete */
mmdc0->mdscr = 0x00000000;
mdelay(1);
}
+void mmdc_read_calibration(struct mx6_ddr_sysinfo const *sysinfo,
+ struct mx6_mmdc_calibration *calib)
+{
+ struct mmdc_p_regs *mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
+ struct mmdc_p_regs *mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR;
+
+ calib->p0_mpwldectrl0 = readl(&mmdc0->mpwldectrl0);
+ calib->p0_mpwldectrl1 = readl(&mmdc0->mpwldectrl1);
+ calib->p0_mpdgctrl0 = readl(&mmdc0->mpdgctrl0);
+ calib->p0_mpdgctrl1 = readl(&mmdc0->mpdgctrl1);
+ calib->p0_mprddlctl = readl(&mmdc0->mprddlctl);
+ calib->p0_mpwrdlctl = readl(&mmdc0->mpwrdlctl);
+
+ if (sysinfo->dsize == 2) {
+ calib->p1_mpwldectrl0 = readl(&mmdc1->mpwldectrl0);
+ calib->p1_mpwldectrl1 = readl(&mmdc1->mpwldectrl1);
+ calib->p1_mpdgctrl0 = readl(&mmdc1->mpdgctrl0);
+ calib->p1_mpdgctrl1 = readl(&mmdc1->mpdgctrl1);
+ calib->p1_mprddlctl = readl(&mmdc1->mprddlctl);
+ calib->p1_mpwrdlctl = readl(&mmdc1->mpwrdlctl);
+ }
+}
+
void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo,
const struct mx6_mmdc_calibration *calib,
const void *ddr_cfg)
projects / u-boot / blobdiff