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charset="utf-8" From: Adrian Ng Ho Yin Update dw_i3c_master_restore_addrs() to preserve existing bits in each Device Address Table (DAT) entry when restoring addresses. This prevents overwriting configuration bits during PM runtime resumes. Signed-off-by: Adrian Ng Ho Yin Reviewed-by: Frank Li --- drivers/i3c/master/dw-i3c-master.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c= -master.c index f96b30c4cbfc..9ca609df593f 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -1696,11 +1696,16 @@ static void dw_i3c_master_restore_addrs(struct dw_i= 3c_master *master) if (master->free_pos & BIT(pos)) continue; =20 - if (master->devs[pos].is_i2c_addr) - reg_val =3D DEV_ADDR_TABLE_LEGACY_I2C_DEV | + reg_val =3D readl(master->regs + DEV_ADDR_TABLE_LOC(master->datstartaddr= , pos)); + + if (master->devs[pos].is_i2c_addr) { + reg_val &=3D ~DEV_ADDR_TABLE_STATIC_MASK; + reg_val |=3D DEV_ADDR_TABLE_LEGACY_I2C_DEV | DEV_ADDR_TABLE_STATIC_ADDR(master->devs[pos].addr); - else - reg_val =3D DEV_ADDR_TABLE_DYNAMIC_ADDR(master->devs[pos].addr); + } else { + reg_val &=3D ~DEV_ADDR_TABLE_DYNAMIC_MASK; + reg_val |=3D DEV_ADDR_TABLE_DYNAMIC_ADDR(master->devs[pos].addr); + } =20 writel(reg_val, master->regs + DEV_ADDR_TABLE_LOC(master->datstartaddr, = pos)); } --=20 2.49.GIT