On Fri, 11 Nov 2016, Chen-Yu Tsai wrote: > The AXP806 supports either master/standalone or slave mode. > Slave mode allows sharing the serial bus, even with multiple > AXP806 which all have the same hardware address. > > This is done with extra "serial interface address extension", > or AXP806_BUS_ADDR_EXT, and "register address extension", or > AXP806_REG_ADDR_EXT, registers. The former is read-only, with > 1 bit customizable at the factory, and 1 bit depending on the > state of an external pin. The latter is writable. Only when > the these device addressing bits (in the upper 4 bits of the > registers) match, will the device respond to operations on > its other registers. > > Add these 2 registers to the regmap so we can access them. > > Signed-off-by: Chen-Yu Tsai <w...@csie.org> > --- > drivers/mfd/axp20x.c | 3 ++- > include/linux/mfd/axp20x.h | 2 ++ > 2 files changed, 4 insertions(+), 1 deletion(-)
Applied, thanks. > diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c > index ba130be32e61..cdaeb34a9a38 100644 > --- a/drivers/mfd/axp20x.c > +++ b/drivers/mfd/axp20x.c > @@ -135,6 +135,7 @@ static const struct regmap_range > axp806_writeable_ranges[] = { > regmap_reg_range(AXP806_PWR_OUT_CTRL1, AXP806_CLDO3_V_CTRL), > regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ2_EN), > regmap_reg_range(AXP20X_IRQ1_STATE, AXP20X_IRQ2_STATE), > + regmap_reg_range(AXP806_REG_ADDR_EXT, AXP806_REG_ADDR_EXT), > }; > > static const struct regmap_range axp806_volatile_ranges[] = { > @@ -305,7 +306,7 @@ static const struct regmap_config axp806_regmap_config = { > .val_bits = 8, > .wr_table = &axp806_writeable_table, > .volatile_table = &axp806_volatile_table, > - .max_register = AXP806_VREF_TEMP_WARN_L, > + .max_register = AXP806_REG_ADDR_EXT, > .cache_type = REGCACHE_RBTREE, > }; > > diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h > index fec597fb34cb..7e85ececcedf 100644 > --- a/include/linux/mfd/axp20x.h > +++ b/include/linux/mfd/axp20x.h > @@ -115,6 +115,8 @@ enum { > #define AXP806_CLDO2_V_CTRL 0x25 > #define AXP806_CLDO3_V_CTRL 0x26 > #define AXP806_VREF_TEMP_WARN_L 0xf3 > +#define AXP806_BUS_ADDR_EXT 0xfe > +#define AXP806_REG_ADDR_EXT 0xff > > /* Interrupt */ > #define AXP152_IRQ1_EN 0x40 -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.