From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Date: Tue, 1 Dec 2015 09:25:46 +0100 Subject: [U-Boot] [PATCH v2 0/9] basic support for Allwinner A83T SOC. In-Reply-To: References: <1448730447-31328-1-git-send-email-vishnupatekar0510@gmail.com> <565C0529.5020203@redhat.com> Message-ID: <565D598A.8080501@redhat.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi, On 30-11-15 16:39, Vishnu Patekar wrote: > Hello Hans, > > > > On Mon, Nov 30, 2015 at 4:13 PM, Hans de Goede wrote: >> Hi Vishnu, >> >>> This patch v2 of series that adds basic support for Allwinner A83T SOC >>> with >>> review comments addressed. >> >> Can you provide some quick instructions on how to test this on the >> A83T HomletV2 ? >> >> With v1 of these patches I tried to just build them and dd them to >> the sdcard, but that did not work. >> >> In the mean time I've figured out that I can get a serial console >> with the firmware in the nand using a sdcard breakout board, so >> I should be able to enter FEL mode by pressing 2 there, but it would >> be really nice if the board would just boot from sdcard... >> > I broke microsd connector of my A83T board, so boot from microsd not tested. > > As you have microSD breakout UART working, you can set > CONFIG_UART0_PORT_F=y and use FEL mode, commands as below > sunxi-fel spl u-boot-sunxi-with-spl.bin > sunxi-fel write 0x4a000000 u-boot-dtb.bin > > This is how i have tested it for now. Ok, that is unfortunate, because regular sd-card boot does not seem to be working. I think you may be relying on some reset / clocks being enabled by boot0 before it passes control to the FEL ROM based on you pressing 2 on the serial console. The reason I believe this is that not even the SPL header is printing, which points to an uart pin / clk / reset setup problem. I will see if I can get things working with sdcard boot tonight. Regards, Hans