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liblitedram/sdram_spd: use temp_len when reading SPD 

This change should change anything from the point of view of
`sdram_read_spd` caller, but it makes it so less I2C reads are actually
hapenning.

With `len` we read too many bytes and write them to the `buf`.
In subsequent iterations we overwrite those bytes as all counters are
being updated by the `temp_len`. Nothing terrible, but too many
bytes were being read.

Signed-off-by: Michal Sieron <msieron@antmicro.com>
This commit is contained in:
Michal Sieron 2023-02-16 14:27:49 +01:00
parent 90f690ecce
commit cdc1152162
1 changed files with 1 additions and 1 deletions
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2
litex/soc/software/liblitedram/sdram_spd.c
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@ -48,7 +48,7 @@ bool sdram_read_spd(uint8_t spd, uint16_t addr, uint8_t *buf, uint16_t len, bool
temp_len = len;
}
ok &= i2c_read(SPD_RW_ADDR(spd), offset, &buf[read_bytes], len, temp_send_stop, 1);
ok &= i2c_read(SPD_RW_ADDR(spd), offset, &buf[read_bytes], temp_len, temp_send_stop, 1);
len -= temp_len;
read_bytes += temp_len;
addr += temp_len;