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fix(standby): use trained DRAM parameters on A733 #2

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Merged
vamrs-feng merged 1 commit into from
Aug 31, 2026
Merged

fix(standby): use trained DRAM parameters on A733 #2

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99 changes: 23 additions & 76 deletions ar100s/driver/dram/dram_dts_para_v2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,72 +21,16 @@ uint32_t dts_dram_para[160] __attribute__((section(".dts_dram_para"), used));
uint32_t dram_tail_magic __attribute__((section(".dram_tail_magic"), used));
#endif

#define USE_DEFAULT_DRAM_PARA 1
#if USE_DEFAULT_DRAM_PARA
static const uint32_t dram_para_default[] = {
/* Param By: Cubie A7A */
/* [0] dram_clk */ 0x708,
/* [1] dram_type */ 0x9,
/* [2] dram_zq */ 0xE0E0E0E,
/* [3] dram_odt */ 0xF0F0F0F,
/* [4] dram_para1 */ 0xEC030E0F,
/* [5] */ 0x0,
/* [6] dram_mr0 */ 0xA10A,
/* [7] dram_mr1 */ 0x20001001,
/* [8] dram_mr2 */ 0x0,
/* [9] dram_mr3 */ 0x80,
/* [10] dram_tpr0 */ 0x88,
/* [11] dram_tpr1 */ 0x6,
/* [12] dram_tpr2 */ 0x0,
/* [13] dram_tpr3 */ 0x0,
/* [14] dram_tpr4 */ 0x0,
/* [15] dram_tpr5 */ 0x1B,
/* [16] dram_tpr6 */ 0x44,
/* [17] dram_tpr7 */ 0x0,
/* [18] dram_tpr8 */ 0x1D,
/* [19] dram_tpr9 */ 0x0,
/* [20] dram_tpr10 */ 0x86,
/* [21] dram_tpr11 */ 0x0,
/* [22] dram_tpr12 */ 0x4040,
/* [23] dram_tpr13 */ 0x80000000,
/* [24] */ 0x11080503,
/* [25] */ 0x3800,
/* [26] */ 0x3514,
/* [27] */ 0x925F0000,
/* [28] */ 0x0,
/* [29] */ 0x0,
/* [30] */ 0x65,
/* [31] */ 0x0,
/* [32] dram_training */ 0x35343435,
/* [33] */ 0x32322E30,
/* [34] */ 0x31342E35,
/* [35] */ 0x34373332,
/* [36] */ 0x2E382F2D,
/* [37] */ 0x37333732,
/* [38] */ 0x36343431,
/* [39] */ 0x30353334,
/* [40] */ 0x2C342A32,
/* [41] */ 0x2E212323,
/* [42] */ 0x21222C27,
/* [43] */ 0x2A252225,
/* [44] */ 0x242D231C,
/* [45] */ 0x23252524,
/* [46] */ 0x23292428,
/* [47] */ 0x1C2D2129,
/* [48] */ 0x22252726,
/* [49] */ 0x23222A22,
/* [50] */ 0x1E1C1F22,
/* [51] */ 0x1E1F201E,
};
#endif
#define DRAM_PARA_WORDS (sizeof(dram_para_t) / sizeof(uint32_t))

uint32_t *dram_dts_parse(void)
{
static uint32_t *dram_para;
int32_t dram_para_node;
char dram_para_prop[20];
void *fdt;
u32 i;
s32 fdt_err;
s32 ret;

fdt = (void *)(dtb_base);

Expand All @@ -99,36 +43,39 @@ uint32_t *dram_dts_parse(void)
fdt_size_dt_struct(fdt), fdt_size_dt_strings(fdt));

/* Check header validity */
fdt_err = fdt_check_header(fdt);
if (fdt_err != 0) {
WRN("DTB header invalid: err=%d (%s), use default dram para\n", fdt_err, fdt_strerror(fdt_err));
ret = fdt_check_header(fdt);
if (ret != 0) {
ERR("DTB header invalid: err=%d (%s)\n", ret, fdt_strerror(ret));
return NULL;
}

/* parse dram para */
dram_para_node = fdt_path_offset(fdt, "/dram");
if (dram_para_node < 0) {
WRN("fdt_path_offset(/dram) failed: %d (%s), use default dram para\n",
ERR("fdt_path_offset(/dram) failed: %d (%s)\n",
dram_para_node, fdt_strerror(dram_para_node));
WRN("DTB header broken: off_struct=0x%x, size_struct=0x%x\n",
fdt_off_dt_struct(fdt), fdt_size_dt_struct(fdt));
return NULL;
}
#if !USE_DEFAULT_DRAM_PARA
char dram_para_prop[20];
for (i = 0; i < (sizeof(dts_dram_para) / sizeof(u32)); i++) {

memset(dts_dram_para, 0, sizeof(dts_dram_para));
for (i = 0; i < DRAM_PARA_WORDS; i++) {
if (i < 10) {
sprintf(dram_para_prop, "dram_para0%d", i);
} else {
sprintf(dram_para_prop, "dram_para%d", i);
}
fdt_getprop_u32(fdt, dram_para_node, dram_para_prop, &dts_dram_para[i]);
LOG("dram para[%d] 0x%x\n", i, dts_dram_para[i]);
}
#else
for (i = 0; i < (sizeof(dram_para_default) / sizeof(u32)); i++) {
dts_dram_para[i] = dram_para_default[i];
LOG("dram para[%d] 0x%x (default)\n", i, dts_dram_para[i]);
ret = fdt_getprop_u32(fdt, dram_para_node, dram_para_prop,
&dts_dram_para[i]);
if (ret < 0) {
ERR("failed to read %s: %d (%s)\n", dram_para_prop,
ret, fdt_strerror(ret));
return NULL;
}
}
#endif

LOG("dram para: clk=0x%x type=0x%x para1=0x%x para2=0x%x tpr13=0x%x\n",
dts_dram_para[0], dts_dram_para[1], dts_dram_para[6],
dts_dram_para[7], dts_dram_para[30]);
dram_para = &dts_dram_para[0];

return dram_para;
Expand Down
7 changes: 4 additions & 3 deletions ar100s/system/daemon/daemon.c
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Original file line number Diff line number Diff line change
Expand Up @@ -203,10 +203,12 @@ void startup_entry(void)
save_state_flag(REC_HOTPULG | 0xc);
LOG("watchdog ok\n");

/* feedback the startup state to ac327 */
startup_state_notify(OK);
/* Parse all data owned by U-Boot before reporting that the SCP is ready. */
platform_dts_parse_late();
set_paras();

/* feedback the startup state to ac327 */
startup_state_notify(OK);
save_state_flag(REC_HOTPULG | 0xf);
LOG("startup feedback ok\n");

Expand All @@ -227,4 +229,3 @@ void startup_entry(void)
while (1)
;
}