On Mon, May 20, 2019 at 07:41:18PM +0530, Sagar Shrikant Kadam wrote:
> The i2c-ocore driver already has a polling mode interface.But it needs
> a workaround for FU540 Chipset on HiFive unleashed board (RevA00).
> There is an erratum in FU540 chip that prevents interrupt driven i2c
> transfers from working, and also the I2C controller's interrupt bit
> cannot be cleared if set, due to this the existing i2c polling mode
> interface added in mainline earlier doesn't work, and CPU stall's
> infinitely, when-ever i2c transfer is initiated.
>
> Ref:previous polling mode support in mainline
>
> commit 69c8c0c0efa8 ("i2c: ocores: add polling interface")
>
> The workaround / fix under OCORES_FLAG_BROKEN_IRQ is particularly for
> FU540-COOO SoC.
>
> Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@xxxxxxxxxx>
Much better, thanks.
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Andrew
