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sdram: Allow killing ram clock source if desired

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This commit is contained in:
CTCaer
2020-04-30 03:39:18 +03:00
parent 093f14923c
commit 1d69809022
5 changed files with 49 additions and 36 deletions
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32
bootloader/mem/sdram.c
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@@ -31,6 +31,8 @@
#include "../soc/t210.h"
#include "../utils/util.h"
#define CONFIG_SDRAM_KEEP_ALIVE
#ifdef CONFIG_SDRAM_COMPRESS_CFG
#include "../libs/compr/lz.h"
#include "sdram_config_lz.inl"
@@ -117,10 +119,14 @@ static void _sdram_config(const sdram_params_t *params)
CLOCK(CLK_RST_CONTROLLER_PLLM_MISC1) = params->pllm_setup_control;
CLOCK(CLK_RST_CONTROLLER_PLLM_MISC2) = 0;
// u32 tmp = (params->pllm_feedback_divider << 8) | params->pllm_input_divider | ((params->pllm_post_divider & 0xFFFF) << 20);
// CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) = tmp;
// CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) = tmp | 0x40000000;
CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) = (params->pllm_feedback_divider << 8) | params->pllm_input_divider | 0x40000000 | ((params->pllm_post_divider & 0xFFFF) << 20);
#ifdef CONFIG_SDRAM_KEEP_ALIVE
CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) =
(params->pllm_feedback_divider << 8) | params->pllm_input_divider | ((params->pllm_post_divider & 0xFFFF) << 20) | PLLCX_BASE_ENABLE;
#else
u32 pllm_div = (params->pllm_feedback_divider << 8) | params->pllm_input_divider | ((params->pllm_post_divider & 0xFFFF) << 20);
CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) = pllm_div;
CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) = pllm_div | PLLCX_BASE_ENABLE;
#endif
u32 wait_end = get_tmr_us() + 300;
while (!(CLOCK(CLK_RST_CONTROLLER_PLLM_BASE) & 0x8000000))
@@ -553,9 +559,9 @@ break_nosleep:
// ZQ CAL setup (not actually issuing ZQ CAL now).
if (params->emc_zcal_warm_cold_boot_enables & 1)
{
if (params->memory_type == 2)
if (params->memory_type == MEMORY_TYPE_DDR3L)
EMC(EMC_ZCAL_WAIT_CNT) = params->emc_zcal_wait_cnt << 3;
if (params->memory_type == 3)
if (params->memory_type == MEMORY_TYPE_LPDDR4)
{
EMC(EMC_ZCAL_WAIT_CNT) = params->emc_zcal_wait_cnt;
EMC(EMC_ZCAL_MRW_CMD) = params->emc_zcal_mrw_cmd;
@@ -571,7 +577,7 @@ break_nosleep:
// Set clock enable signal.
u32 pin_gpio_cfg = (params->emc_pin_gpio_enable << 16) | (params->emc_pin_gpio << 12);
if (params->memory_type == 2 || params->memory_type == 3)
if (params->memory_type == MEMORY_TYPE_DDR3L || params->memory_type == MEMORY_TYPE_LPDDR4)
{
EMC(EMC_PIN) = pin_gpio_cfg;
(void)EMC(EMC_PIN);
@@ -580,9 +586,9 @@ break_nosleep:
(void)EMC(EMC_PIN);
}
if (params->memory_type == 3)
if (params->memory_type == MEMORY_TYPE_LPDDR4)
usleep(params->emc_pin_extra_wait + 2000);
else if (params->memory_type == 2)
else if (params->memory_type == MEMORY_TYPE_DDR3L)
usleep(params->emc_pin_extra_wait + 500);
// Enable clock enable signal.
@@ -591,15 +597,15 @@ break_nosleep:
usleep(params->emc_pin_program_wait);
// Send NOP (trigger just needs to be non-zero).
if (params->memory_type != 3)
if (params->memory_type != MEMORY_TYPE_LPDDR4)
EMC(EMC_NOP) = (params->emc_dev_select << 30) + 1;
// On coldboot w/LPDDR2/3, wait 200 uSec after asserting CKE high.
if (params->memory_type == 1)
if (params->memory_type == MEMORY_TYPE_LPDDR2)
usleep(params->emc_pin_extra_wait + 200);
// Init zq calibration,
if (params->memory_type == 3)
if (params->memory_type == MEMORY_TYPE_LPDDR4)
{
// Patch 6 using BCT spare variables.
if (params->emc_bct_spare10)
@@ -640,7 +646,7 @@ break_nosleep:
PMC(APBDEV_PMC_DDR_CFG) = params->pmc_ddr_cfg;
// Start periodic ZQ calibration (LPDDRx only).
if (params->memory_type - 1 <= 2)
if (params->memory_type && params->memory_type <= MEMORY_TYPE_LPDDR4)
{
EMC(EMC_ZCAL_INTERVAL) = params->emc_zcal_interval;
EMC(EMC_ZCAL_WAIT_CNT) = params->emc_zcal_wait_cnt;