Hi Marcin,
On Wed, Aug 31, 2016 at 7:54 AM, Marcin Niestroj
<m.niest...@grinn-global.com> wrote:
> liteSOM is a System On Module (http://grinn-global.com/litesom/). It
> can't exists on its own, but will be used as part of other boards.
>
> Hardware specification:
> * NXP i.MX6UL processor
> * 256M or 512M DDR3 memory
> * optional eMMC (uSDHC2)
>
> liteBoard is a development board which uses liteSOM as its base.
>
> Hardware specification:
> * liteSOM (i.MX6UL, DRAM, eMMC)
> * Ethernet PHY (id 0)
> * USB host (usb_otg1)
> * MicroSD slot (uSDHC1)
>
> The main question is: how should liteSOM sources be integrated? I didn't
> find similar modules, which are part of different boards in u-boot
> tree. For now, I've put source into arch/arm/mach-litesom, but I guess
> it is not the best place for them.
What about placing it inside board/grinn/ ?
> + .p0_mpdgctrl0 = 0x41490145,
> + .p0_mprddlctl = 0x40404546,
> + .p0_mpwrdlctl = 0x4040524D,
> +};
> +
> +struct mx6_ddr_sysinfo ddr_sysinfo = {
> + .dsize = 0,
> + .cs_density = 20,
> + .ncs = 1,
> + .cs1_mirror = 0,
> + .rtt_wr = 2,
> + .rtt_nom = 1, /* RTT_Nom = RZQ/2 */
> + .walat = 1, /* Write additional latency */
> + .ralat = 5, /* Read additional latency */
> + .mif3_mode = 3, /* Command prediction working mode */
> + .bi_on = 1, /* Bank interleaving enabled */
> + .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
> + .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
> + .ddr_type = DDR_TYPE_DDR3,
Please rebase against U-Boot 2016.09. There are new fields now: refsel and refr.
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