Messages in this thread |  | | Date | Fri, 14 Jun 2019 22:58:49 +0200 | From | Wolfram Sang <> | Subject | Re: [PATCH REPOST v8 3/3] i2c-ocores: sifive: add polling mode workaround for FU540-C000 SoC. |
| |
On Sat, Jun 01, 2019 at 11:41:15AM +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: > commit dd7dbf0eb090 ("i2c: ocores: refactor setup for polling") > > The workaround / fix under OCORES_FLAG_BROKEN_IRQ is particularly for > FU540-COOO SoC. > > The polling function identifies a SiFive device based on the device node > and enables the workaround. > > Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com> > Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Applied to for-next, thanks!
[unhandled content-type:application/pgp-signature] |  |