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Binbin Zhou authored
According to the chip manual, the I2C register access type of Loongson-2K2000/LS7A is "B", so we can only access registers in byte form (readb()/writeb()). Although Loongson-2K0500/Loongson-2K1000 do not have similar constraints, register accesses in byte form also behave correctly. Also, in hardware, the frequency division registers are defined as two separate registers (high 8-bit and low 8-bit), so we just access them directly as bytes. Fixes: 015e61f0 ("i2c: ls2x: Add driver for Loongson-2K/LS7A I2C controller") Co-developed-by:
Hongliang Wang <wanghongliang@loongson.cn> Signed-off-by:
Hongliang Wang <wanghongliang@loongson.cn> Signed-off-by:
Binbin Zhou <zhoubinbin@loongson.cn> Cc: stable@vger.kernel.org # v6.3+ Reviewed-by:
Andy Shevchenko <andy@kernel.org> Signed-off-by:
Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/20250220125612.1910990-1-zhoubinbin@loongson.cn
Binbin Zhou authoredAccording to the chip manual, the I2C register access type of Loongson-2K2000/LS7A is "B", so we can only access registers in byte form (readb()/writeb()). Although Loongson-2K0500/Loongson-2K1000 do not have similar constraints, register accesses in byte form also behave correctly. Also, in hardware, the frequency division registers are defined as two separate registers (high 8-bit and low 8-bit), so we just access them directly as bytes. Fixes: 015e61f0 ("i2c: ls2x: Add driver for Loongson-2K/LS7A I2C controller") Co-developed-by:
Hongliang Wang <wanghongliang@loongson.cn> Signed-off-by:
Hongliang Wang <wanghongliang@loongson.cn> Signed-off-by:
Binbin Zhou <zhoubinbin@loongson.cn> Cc: stable@vger.kernel.org # v6.3+ Reviewed-by:
Andy Shevchenko <andy@kernel.org> Signed-off-by:
Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/20250220125612.1910990-1-zhoubinbin@loongson.cn