pinctrl: renesas: r8a77995: Add bias pinconf support
Implement support for pull-up (most pins, excl. DU_DOTCLKIN0) and
pull-down (most pins, excl. JTAG) handling for the R-Car D3 SoC, using
the common R-Car bias handling.
Note that the documentation of the LSI pin pull-up/down control Register
2 (PUD2) in the R-Car Gen3 Hardware User's Manual Rev. 2.20 seems to
have mixed up the bits for the NFRE# and NFWE# pins: their definition is
inconsistent with the documentation of the corresponding bits in the LSI
pin pull-enable register 2(PUEN2), and the bit order in Rev. 0.7 of the
R-Car D3 pinfunction spreadsheet, so I have used the latter.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/b4c9cd68f9728eb9ebc8526ee238013ddf1e1407.1619785375.git.geert+renesas@glider.be
1 file changed
