Re: [Qemu-devel] [PATCH 4/4] arm: Add an RX8900 RTC to the ASpeed board

[Andrew Jeffery]

On Wed, 2016-11-23 at 09:48 +0100, Cédric Le Goater wrote:
> On 11/23/2016 01:46 AM, Alastair D'Silva wrote:
> > On Tue, 2016-11-22 at 17:56 +0100, Cédric Le Goater wrote:
> > > On 11/17/2016 05:36 AM, Alastair D'Silva wrote:
> > > > 
> > > > > > > > From: Alastair D'Silva <address@hidden>
> > > > 
> > > > Connect an RX8900 RTC to i2c12 of the AST2500 SOC at address 0x32
> > > 
> > > If this is a board device, we should include it under a machine
> > > routine.
> > > 
> > > Is that for the palmetto ? The ast2500 does not have a RTC.
> > > 
> > > Thanks,
> > > 
> > > C. 
> > 
> > Ok
> 
>  
> I suppose we could change aspeed_board_init() to return 
> a AspeedSoCState* and use the soc object in the specific 
> <machine>_init routines to add devices. 
> 
> Andrew, what is your opinion on that ? 

I see the I2C bus configuration as a declarative problem. In a similar
vein we already have AspeedBoardConfig, so I think we should try to
describe the buses and attached devices there. That way we can have a
generic aspeed_i2c_bus_init() routine that we call inside
aspeed_board_init().

This would avoid encoding the buses and their slaves in the board-
specific init code.

Is that a reasonable alternative? I agree that we need to use a
different approach to that which the current patch is using.

Andrew

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