SPDSTS_POLARITY
cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
u32 cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;