STM32H7_SPI_SR
sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
while (readl_relaxed(spi->base + STM32H7_SPI_SR) & STM32H7_SPI_SR_TXP)
(readl_relaxed(spi->base + STM32H7_SPI_SR) &
u32 sr = readl_relaxed(spi->base + STM32H7_SPI_SR);
sr = readl_relaxed(spi->base + STM32H7_SPI_SR);