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    SubjectRe: [PATCH v2 1/6] mfd: TPS65910: Handle non-existent devices
    On 10/25/2011 02:14 AM, Mark Brown wrote:
    > On Mon, Oct 24, 2011 at 12:05:59PM -0500, Kyle Manna wrote:
    >> Attempt to read the first register of the device, if there is no
    >> device return -ENODEV
    > Can you check for a known value in any of the registers?
    Unfortunately on this chip there aren't any identification or constant
    test registers. The only register close is the JTAGVERNUM_REG and
    that's will change across silicon revisions.

    - Kyle

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