[U-Boot] [PATCH] nxp/ls2088ardb: Add QSPI-boot support

[York Sun]

On 04/13/2017 12:29 AM, Priyanka Jain wrote:

<snip>

>>>>
>>>>  /* Debug Server firmware */
>>>>  #define CONFIG_SYS_DEBUG_SERVER_FW_IN_NOR @@ -256,6 +268,7 @@
>>>> unsigned long get_board_sys_clk(void);
>>>>  /*
>>>>   * I2C
>>>>   */
>>>> +#define CONFIG_SYS_I2C_FPGA_ADDR	0x66
> LS2080ARDB current u-boot code is closely tied with qixis code at many places.
> And if try to decouple QIXIS code with u-boot code, it will take a lot of code changes.
> So, I just bypassed the final QIXIS call keeping other code changes for Qixis access via I2C.
>
> For customized boards, which uses RDB code as reference, having proper way of CPLD access via I2C will be useful.
> Also the board issue of CPLD access via I2C is getting fixed in next similar board LS2081ARDB.
> Please suggest how to proceed on this.
>

You said the CPLD is not accessible via I2C bus. What do you get by 
pretending it is there? You know once you define this macro and 
CONFIG_QIXIS_I2C_ACCESS, all QIXIS access will go through I2C. If it 
doesn't do what you expect, how good is that as a reference design?

One way to get around this hardware bug, is to handle NO_QIXIS.

York