On Monday, April 28, 2014 at 05:53:40 AM, Huang Shijie wrote: > This patch adds the DDR quad read support by the following: > > [1] add SPI_NOR_DDR_QUAD read mode. > > [2] add DDR Quad read opcodes: > SPINOR_OP_READ_1_4_4_D / SPINOR_OP_READ4_1_4_4_D > > [3] add set_ddr_quad_mode() to initialize for the DDR quad read. > Currently it only works for Spansion NOR. > > [3] about the dummy cycles. > We set the dummy with 8 for DDR quad read by default. > The m25p80.c can not support the DDR quad read, but the SPI NOR > controller can set the dummy value in its child DT node, and the SPI NOR > framework can parse it out. > > Test this patch for Spansion s25fl128s NOR flash. > > Signed-off-by: Huang Shijie <b32955@xxxxxxxxxxxxx> Acked-by: Marek Vasut <marex@xxxxxxx> Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
