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    Subject[PATCH v2 5/6] arm64: dts: ls208xa-rdb: fix errata E-00013
    Date
    From: Biwen Li <biwen.li@nxp.com>

    Specify a channel zero in idle state to avoid enterring tri-stated state
    for PCA9547.

    Some information about E-00013:
    - Description: I2C1 and I2C3 buses are missing pull-up.
    - Impact: When the PCA954x device is tri-stated, the I2C bus will float.
    This makes the I2C bus and its associated downstream devices
    inaccessible.
    - Hardware fix: Populate resistors R189 and R190 for I2C1 and resistors
    R228 and R229 for I2C3.
    - Software fix: Remove the tri-state option from the PCA954x
    driver(PCA954x always on enable status, specify a channel zero in dts to
    fix the errata E-00013).

    Signed-off-by: Biwen Li <biwen.li@nxp.com>
    Signed-off-by: Li Yang <leoyang.li@nxp.com>
    ---
    arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi
    index f8135c5c252d..3d9647b3da14 100644
    --- a/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi
    +++ b/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi
    @@ -49,6 +49,8 @@ pca9547@75 {
    reg = <0x75>;
    #address-cells = <1>;
    #size-cells = <0>;
    + idle-state = <0>;
    +
    i2c@1 {
    #address-cells = <1>;
    #size-cells = <0>;
    --
    2.37.1
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