sunxi: DRAM: add Allwinner H5 support
The DRAM controller in the Allwinner H5 SoC is again very similar to
the one in the H3 and A64.
Based on the existing socid parameter, add support for this controller
by reusing the bulk of the code and only deviating where needed.
These new bits set or cleared here and there have been mostly found by
looking at DRAM register dumps after using the H5 boot0 and comparing
them to what we set in the code. So for now it's mostly unclear what
those bits actually mean - hence the missing names and comments.
Also add the delay line parameters taken from the boot0 and libdram
disassembly.
Register setup differences between H5 and H3 are courtesy of Jens Kuske.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
diff --git a/arch/arm/include/asm/arch-sunxi/cpu.h b/arch/arm/include/asm/arch-sunxi/cpu.h
index 6f96a97..e8e670e 100644
--- a/arch/arm/include/asm/arch-sunxi/cpu.h
+++ b/arch/arm/include/asm/arch-sunxi/cpu.h
@@ -15,5 +15,6 @@
#define SOCID_A64 0x1689
#define SOCID_H3 0x1680
+#define SOCID_H5 0x1718
#endif /* _SUNXI_CPU_H */
diff --git a/arch/arm/mach-sunxi/dram_sun8i_h3.c b/arch/arm/mach-sunxi/dram_sun8i_h3.c
index 9f7cc7f..d681a9d 100644
--- a/arch/arm/mach-sunxi/dram_sun8i_h3.c
+++ b/arch/arm/mach-sunxi/dram_sun8i_h3.c
@@ -177,6 +177,34 @@
writel(0x81000004, &mctl_com->mdfs_bwlr[2]);
}
+static void mctl_set_master_priority_h5(void)
+{
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+
+ /* enable bandwidth limit windows and set windows size 1us */
+ writel(399, &mctl_com->tmr);
+ writel((1 << 16), &mctl_com->bwcr);
+
+ /* set cpu high priority */
+ writel(0x00000001, &mctl_com->mapr);
+
+ /* Port 2 is reserved per Allwinner's linux-3.10 source, yet
+ * they initialise it */
+ MBUS_CONF( CPU, true, HIGHEST, 0, 300, 260, 150);
+ MBUS_CONF( GPU, true, HIGHEST, 0, 600, 400, 200);
+ MBUS_CONF(UNUSED, true, HIGHEST, 0, 512, 256, 96);
+ MBUS_CONF( DMA, true, HIGHEST, 0, 256, 128, 32);
+ MBUS_CONF( VE, true, HIGHEST, 0, 1900, 1500, 1000);
+ MBUS_CONF( CSI, true, HIGHEST, 0, 150, 120, 100);
+ MBUS_CONF( NAND, true, HIGH, 0, 256, 128, 64);
+ MBUS_CONF( SS, true, HIGHEST, 0, 256, 128, 64);
+ MBUS_CONF( TS, true, HIGHEST, 0, 256, 128, 64);
+ MBUS_CONF( DI, true, HIGH, 0, 1024, 256, 64);
+ MBUS_CONF( DE, true, HIGHEST, 3, 3400, 2400, 1024);
+ MBUS_CONF(DE_CFD, true, HIGHEST, 0, 600, 400, 200);
+}
+
static void mctl_set_master_priority(uint16_t socid)
{
switch (socid) {
@@ -186,6 +214,9 @@
case SOCID_A64:
mctl_set_master_priority_a64();
return;
+ case SOCID_H5:
+ mctl_set_master_priority_h5();
+ return;
}
}
@@ -256,7 +287,7 @@
/* set two rank timing */
clrsetbits_le32(&mctl_ctl->dramtmg[8], (0xff << 8) | (0xff << 0),
- (0x66 << 8) | (0x10 << 0));
+ ((socid == SOCID_H5 ? 0x33 : 0x66) << 8) | (0x10 << 0));
/* set PHY interface timing, write latency and read latency configure */
writel((0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8) |
@@ -391,7 +422,7 @@
CCM_DRAMCLK_CFG_DIV(1) |
CCM_DRAMCLK_CFG_SRC_PLL11 |
CCM_DRAMCLK_CFG_UPD);
- } else if (socid == SOCID_H3) {
+ } else if (socid == SOCID_H3 || socid == SOCID_H5) {
clock_set_pll5(CONFIG_DRAM_CLK * 2 * 1000000, false);
clrsetbits_le32(&ccm->dram_clk_cfg,
CCM_DRAMCLK_CFG_DIV_MASK |
@@ -410,7 +441,7 @@
setbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST);
udelay(10);
- writel(0xc00e, &mctl_ctl->clken);
+ writel(socid == SOCID_H5 ? 0x8000 : 0xc00e, &mctl_ctl->clken);
udelay(500);
}
@@ -434,7 +465,10 @@
/* setting VTC, default disable all VT */
clrbits_le32(&mctl_ctl->pgcr[0], (1 << 30) | 0x3f);
- clrsetbits_le32(&mctl_ctl->pgcr[1], 1 << 24, 1 << 26);
+ if (socid == SOCID_H5)
+ setbits_le32(&mctl_ctl->pgcr[1], (1 << 24) | (1 << 26));
+ else
+ clrsetbits_le32(&mctl_ctl->pgcr[1], 1 << 24, 1 << 26);
/* increase DFI_PHY_UPD clock */
writel(PROTECT_MAGIC, &mctl_com->protect);
@@ -444,15 +478,22 @@
udelay(100);
/* set dramc odt */
- for (i = 0; i < 4; i++)
- clrsetbits_le32(&mctl_ctl->dx[i].gcr, (0x3 << 4) |
- (0x1 << 1) | (0x3 << 2) | (0x3 << 12) |
- (0x3 << 14),
- IS_ENABLED(CONFIG_DRAM_ODT_EN) ?
- DX_GCR_ODT_DYNAMIC : DX_GCR_ODT_OFF);
+ for (i = 0; i < 4; i++) {
+ u32 clearmask = (0x3 << 4) | (0x1 << 1) | (0x3 << 2) |
+ (0x3 << 12) | (0x3 << 14);
+ u32 setmask = IS_ENABLED(CONFIG_DRAM_ODT_EN) ?
+ DX_GCR_ODT_DYNAMIC : DX_GCR_ODT_OFF;
+
+ if (socid == SOCID_H5) {
+ clearmask |= 0x2 << 8;
+ setmask |= 0x4 << 8;
+ }
+ clrsetbits_le32(&mctl_ctl->dx[i].gcr, clearmask, setmask);
+ }
/* AC PDR should always ON */
- setbits_le32(&mctl_ctl->aciocr, 0x1 << 1);
+ clrsetbits_le32(&mctl_ctl->aciocr, socid == SOCID_H5 ? (0x1 << 11) : 0,
+ 0x1 << 1);
/* set DQS auto gating PD mode */
setbits_le32(&mctl_ctl->pgcr[2], 0x3 << 6);
@@ -464,7 +505,7 @@
/* dphy & aphy phase select 270 degree */
clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8),
(0x1 << 10) | (0x2 << 8));
- } else if (socid == SOCID_A64) {
+ } else if (socid == SOCID_A64 || socid == SOCID_H5) {
/* dphy & aphy phase select ? */
clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8),
(0x0 << 10) | (0x3 << 8));
@@ -488,11 +529,12 @@
mctl_phy_init(PIR_PLLINIT | PIR_DCAL | PIR_PHYRST |
PIR_DRAMRST | PIR_DRAMINIT | PIR_QSGATE);
- } else if (socid == SOCID_A64) {
+ } else if (socid == SOCID_A64 || socid == SOCID_H5) {
clrsetbits_le32(&mctl_ctl->zqcr, 0xffffff, CONFIG_DRAM_ZQ);
mctl_phy_init(PIR_ZCAL | PIR_PLLINIT | PIR_DCAL | PIR_PHYRST |
PIR_DRAMRST | PIR_DRAMINIT | PIR_QSGATE);
+ /* no PIR_QSGATE for H5 ???? */
}
/* detect ranks and bus width */
@@ -533,7 +575,7 @@
/* set PGCR3, CKE polarity */
if (socid == SOCID_H3)
writel(0x00aa0060, &mctl_ctl->pgcr[3]);
- else if (socid == SOCID_A64)
+ else if (socid == SOCID_A64 || socid == SOCID_H5)
writel(0xc0aa0060, &mctl_ctl->pgcr[3]);
/* power down zq calibration module for power save */
@@ -604,6 +646,22 @@
3, 4, 0, 3, 4, 1, 4, 0, \
1, 1, 0, 1, 13, 5, 4 }
+#define SUN8I_H5_DX_READ_DELAYS \
+ {{ 14, 15, 17, 17, 17, 17, 17, 18, 17, 3, 3 }, \
+ { 21, 21, 12, 22, 21, 21, 21, 21, 21, 3, 3 }, \
+ { 16, 19, 19, 17, 22, 22, 21, 22, 19, 3, 3 }, \
+ { 21, 21, 22, 22, 20, 21, 19, 19, 19, 3, 3 } }
+#define SUN8I_H5_DX_WRITE_DELAYS \
+ {{ 1, 2, 3, 4, 3, 4, 4, 4, 6, 6, 6 }, \
+ { 6, 6, 6, 5, 5, 5, 5, 5, 6, 6, 6 }, \
+ { 0, 2, 4, 2, 6, 5, 5, 5, 6, 6, 6 }, \
+ { 3, 3, 3, 2, 2, 1, 1, 1, 4, 4, 4 } }
+#define SUN8I_H5_AC_DELAYS \
+ { 0, 0, 5, 5, 0, 0, 0, 0, \
+ 0, 0, 0, 0, 3, 3, 3, 3, \
+ 3, 3, 3, 3, 3, 3, 3, 3, \
+ 3, 3, 3, 3, 2, 0, 0 }
+
unsigned long sunxi_dram_init(void)
{
struct sunxi_mctl_com_reg * const mctl_com =
@@ -625,6 +683,10 @@
.dx_read_delays = SUN50I_A64_DX_READ_DELAYS,
.dx_write_delays = SUN50I_A64_DX_WRITE_DELAYS,
.ac_delays = SUN50I_A64_AC_DELAYS,
+#elif defined(CONFIG_MACH_SUN50I_H5)
+ .dx_read_delays = SUN8I_H5_DX_READ_DELAYS,
+ .dx_write_delays = SUN8I_H5_DX_WRITE_DELAYS,
+ .ac_delays = SUN8I_H5_AC_DELAYS,
#endif
};
/*
@@ -636,6 +698,8 @@
uint16_t socid = SOCID_H3;
#elif defined(CONFIG_MACH_SUN50I)
uint16_t socid = SOCID_A64;
+#elif defined(CONFIG_MACH_SUN50I_H5)
+ uint16_t socid = SOCID_H5;
#endif
mctl_sys_init(socid, ¶);
@@ -652,8 +716,9 @@
if (socid == SOCID_H3)
writel(0x0c000400, &mctl_ctl->odtcfg);
- if (socid == SOCID_A64) {
- setbits_le32(&mctl_ctl->vtfcr, 2 << 8);
+ if (socid == SOCID_A64 || socid == SOCID_H5) {
+ setbits_le32(&mctl_ctl->vtfcr,
+ (socid == SOCID_H5 ? 3 : 2) << 8);
clrbits_le32(&mctl_ctl->pgcr[2], (1 << 13));
}