Hello, The interrupt model of the Aspeed I2C controller does handle correctly the RX_DONE bit. As indicated in the AST2500 datasheet, the RX_DONE bit needs to be cleared to allow mode data to be received. This series fixes the behavior and delays the data reception until the bit has been cleared.
Revealed by : [PATCH i2c-next v6] i2c: aspeed: Handle master/slave combined irq events https://lkml.org/lkml/2018/8/23/1366 which fixes irq handling in Linux at high bus frequencies. Thanks, C. Cédric Le Goater (1): aspeed/i2c: interrupts should be cleared by software only Guenter Roeck (2): aspeed/i2c: Handle receive command in separate function aspeed/i2c: Fix receive done interrupt handling hw/i2c/aspeed_i2c.c | 68 +++++++++++++++++++++++++++++++-------------- 1 file changed, 47 insertions(+), 21 deletions(-) -- 2.17.1
