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Signed-off-by: Clark Wang --- V2: - Add this DT-bindings string in this version. --- .../devicetree/bindings/spi/spi-fsl-lpspi.txt | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.txt b/Docu= mentation/devicetree/bindings/spi/spi-fsl-lpspi.txt index 6cc3c6fe25a3..e71b81a41ac0 100644 --- a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.txt +++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.txt @@ -7,7 +7,11 @@ Required properties: - reg : address and length of the lpspi master registers - interrupt-parent : core interrupt controller - interrupts : lpspi interrupt -- clocks : lpspi clock specifier +- clocks : lpspi clock specifier. Its number and order need to correspond = to the + value in clock-names. +- clock-names : Corresponding to per clock and ipg clock in "clocks" + respectively. In i.MX7ULP, it only has per clk, so use CLK_DUMMY + to fill the "ipg" blank. - spi-slave : spi slave mode support. In slave mode, add this attribute wi= thout value. In master mode, remove it. =20 @@ -18,6 +22,8 @@ lpspi2: lpspi@40290000 { reg =3D <0x40290000 0x10000>; interrupt-parent =3D <&intc>; interrupts =3D ; - clocks =3D <&clks IMX7ULP_CLK_LPSPI2>; + clocks =3D <&clks IMX7ULP_CLK_LPSPI2>, + <&clks IMX7ULP_CLK_DUMMY>; + clock-names =3D "per", "ipg"; spi-slave; }; --=20 2.17.1