TX_FIFO_EMPTY_COUNT_MAX  152 drivers/spi/spi-tegra114.c #define TX_FIFO_EMPTY_COUNT_MAX			SPI_TX_FIFO_EMPTY_COUNT(0x40)
TX_FIFO_EMPTY_COUNT_MAX  138 drivers/spi/spi-tegra20-slink.c #define TX_FIFO_EMPTY_COUNT_MAX		SLINK_TX_FIFO_EMPTY_COUNT(0x20)