diff options
| -rw-r--r-- | chip/stm32/i2c-stm32f0.c | 3 | ||||
| -rw-r--r-- | chip/stm32/i2c-stm32f4.c | 3 | ||||
| -rw-r--r-- | include/config.h | 8 |
3 files changed, 12 insertions, 2 deletions
diff --git a/chip/stm32/i2c-stm32f0.c b/chip/stm32/i2c-stm32f0.c index 5b58cb3e45..d1d40f242b 100644 --- a/chip/stm32/i2c-stm32f0.c +++ b/chip/stm32/i2c-stm32f0.c @@ -196,7 +196,8 @@ defined(CONFIG_LOW_POWER_IDLE) && \ * and result/size on response). After any protocol-specific headers, the * buffers must be 32-bit aligned. */ -static uint8_t host_buffer_padded[I2C_MAX_HOST_PACKET_SIZE + 4] __aligned(4); +static uint8_t host_buffer_padded[I2C_MAX_HOST_PACKET_SIZE + 4 + + CONFIG_I2C_EXTRA_PACKET_SIZE] __aligned(4); static uint8_t * const host_buffer = host_buffer_padded + 2; static uint8_t params_copy[I2C_MAX_HOST_PACKET_SIZE] __aligned(4); static int host_i2c_resp_port; diff --git a/chip/stm32/i2c-stm32f4.c b/chip/stm32/i2c-stm32f4.c index 5d8a837cf6..a542088567 100644 --- a/chip/stm32/i2c-stm32f4.c +++ b/chip/stm32/i2c-stm32f4.c @@ -763,7 +763,8 @@ DECLARE_HOOK(HOOK_FREQ_CHANGE, i2c_freq_change_hook, HOOK_PRIO_DEFAULT); * and result/size on response). After any protocol-specific headers, the * buffers must be 32-bit aligned. */ -static uint8_t host_buffer_padded[I2C_MAX_HOST_PACKET_SIZE + 4] __aligned(4); +static uint8_t host_buffer_padded[I2C_MAX_HOST_PACKET_SIZE + 4 + + CONFIG_I2C_EXTRA_PACKET_SIZE] __aligned(4); static uint8_t * const host_buffer = host_buffer_padded + 2; static uint8_t params_copy[I2C_MAX_HOST_PACKET_SIZE] __aligned(4); static int host_i2c_resp_port; diff --git a/include/config.h b/include/config.h index 76a6049720..7d8d3900d1 100644 --- a/include/config.h +++ b/include/config.h @@ -1438,6 +1438,14 @@ #undef CONFIG_I2C_SCL_GATE_GPIO /* + * Some chip supports two owned slave address. The second slave address is used + * for other purpose such as board specific i2c commands. This option can be + * set if user of the second slave address requires larger host packet buffer + * size. + */ +#define CONFIG_I2C_EXTRA_PACKET_SIZE 0 + +/* * I2C multi-port controller. * * If CONFIG_I2C_MULTI_PORT_CONTROLLER is defined, a single on-chip I2C |