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l4t: allow ram undervolting

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CTCaer 2023-07-28 04:04:03 +03:00
parent 010b08d4c7
commit cb964fe5d2
2 changed files with 4 additions and 2 deletions
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2
README.md
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@ -116,6 +116,8 @@ There are four possible type of entries. "**[ ]**": Boot entry, "**{ }**": Capti
| l4t=1 | L4T Linux/Android native launching. | | l4t=1 | L4T Linux/Android native launching. |
| boot_prefixes={FOLDER path} | L4T bootstack directory. | | boot_prefixes={FOLDER path} | L4T bootstack directory. |
| ram_oc=0 | L4T RAM Overclocking. Check README_CONFIG.txt for more info. | | ram_oc=0 | L4T RAM Overclocking. Check README_CONFIG.txt for more info. |
| ram_oc_vdd2=1100 | L4T RAM VDD2 Voltage. Set VDD2 (T210B01) or VDD2/VDDQ (T210) voltage. 1050-1175. |
| ram_oc_vddq=600 | L4T RAM VDDQ Voltage. Set VDDQ (T210B01). 550-650. |
| uart_port=0 | Enables logging on serial port for L4T uboot/kernel. | | uart_port=0 | Enables logging on serial port for L4T uboot/kernel. |
| Additional keys | Each distro supports more keys. Check README_CONFIG.txt for more info. | | Additional keys | Each distro supports more keys. Check README_CONFIG.txt for more info. |
| ---------------------- | ---------------------------------------------------------- | | ---------------------- | ---------------------------------------------------------- |

4
bootloader/l4t/l4t.c
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@ -263,9 +263,9 @@ typedef struct _l4t_ctxt_t
emc_table_t *mtc_table; emc_table_t *mtc_table;
} l4t_ctxt_t; } l4t_ctxt_t;
#define DRAM_VDD2_OC_MIN_VOLTAGE 1100 #define DRAM_VDD2_OC_MIN_VOLTAGE 1050
#define DRAM_VDD2_OC_MAX_VOLTAGE 1175 #define DRAM_VDD2_OC_MAX_VOLTAGE 1175
#define DRAM_VDDQ_OC_MIN_VOLTAGE 600 #define DRAM_VDDQ_OC_MIN_VOLTAGE 550
#define DRAM_VDDQ_OC_MAX_VOLTAGE 650 #define DRAM_VDDQ_OC_MAX_VOLTAGE 650
#define DRAM_T210B01_TBL_MAX_FREQ 1600000 #define DRAM_T210B01_TBL_MAX_FREQ 1600000