SPI_COMMAND2
tegra_spi_readl(tspi, SPI_COMMAND2));
tspi->def_command2_reg = tegra_spi_readl(tspi, SPI_COMMAND2);
tegra_spi_writel(tspi, tspi->def_command2_reg, SPI_COMMAND2);
tegra_spi_writel(tspi, command2, SPI_COMMAND2);