19 Jul
2023
19 Jul
'23
11:22 a.m.
On Wed, Jul 19, 2023 at 2:46 PM Weijie Gao weijie.gao@mediatek.com wrote:
In u-boot we don't use IRQ. Instead, we poll busy bit in SPI_STATUS.
However these IRQ enable bits may be set in previous boot stage (BootROM).
If we leave these bits not cleared, although u-boot has disabled IRQ and nothing will happen, the linux kernel may encounter panic during initializing the spim driver due to IRQ event happens before IRQ handler is properly setup.
This patch clear IRQ bits to prevent this from happening.
Signed-off-by: SkyLake.Huang skylake.huang@mediatek.com Signed-off-by: Weijie Gao weijie.gao@mediatek.com
Reviewed-by: Jagan Teki jagan@amarulasolutions.com