On Sat, Aug 22, 2020 at 10:24:58PM -0700, Thirupathaiah Annapureddy wrote:
On 8/20/2020 5:03 PM, Tom Rini wrote:
On Thu, Aug 20, 2020 at 02:09:55PM -0700, Thirupathaiah Annapureddy wrote:
Hi Ryan,
Thanks for reviewing the patch. Please see my comment(s):
On 8/19/2020 7:06 PM, Ryan Chen wrote:
Hi
-----Original Message----- From: Thirupathaiah Annapureddy [mailto:thiruan@linux.microsoft.com] Sent: Thursday, August 20, 2020 8:16 AM To: u-boot@lists.denx.de Cc: Maxim Sloyko maxims@google.com; Marek Vasut marex@denx.de; ChiaWei Wang chiawei_wang@aspeedtech.com; Ryan Chen ryan_chen@aspeedtech.com Subject: Re: [PATCH] arm: dts: fix ast2500-evb inclusion for correct target
Adding Ryan and Chiawei to the list.
On 8/17/2020 5:53 PM, Thirupathaiah Annapureddy wrote:
Include ast2500-evb.dtb for CONFIG_TARGET_EVB_AST2500 instead of for all aspeed targets.
There should not have to many Kconfig for ASPEED platform.
When you build U-Boot, you have to provide a platform specific defconfig as the target. ex: evb-ast2500_defconfig. defconfig specifies the platform specific device tree file. ex: CONFIG_DEFAULT_DEVICE_TREE="ast2500-evb"
I do not see any reason to make other device trees (ex: ast2600a0-evb.dtb) when we are building for evb-ast2500.
It keeps the Makefile logic clearer and makes future moves towards more platforms in a single binary easier if we just build all of the dtb files.
ast2400 is based on ARM926EJ-S processor (ARMv5-architecture). ast2500 is based on ARM1176JZS processor (ARMv6-architecture). ast2600 is based on Cortex A7 processor (ARMv7-A architecture).
Each of the above SOC is using a different ARM CPU(s) with different ARM architecture revision. Is it possible for single binary to support multiple platforms based on above SOCs?
Thanks for the details. It depends on thee goals and needs. There's probably some hurdles to supporting v5/v6 and v7 in a single binary. But yes, if we aren't supporting all 3 of those families yet, we should include and build the families we can support. But that would still mean all ast2500 DTBs for example still.