| Message ID | 1465971519-22344-4-git-send-email-peng.fan@nxp.com |
|---|---|
| State | Accepted |
| Commit | 0d7cdc2abfc34125f0bc85f864d285f06675290a |
| Delegated to: | Stefano Babic |
| Headers | show |
On Wed, Jun 15, 2016 at 3:18 AM, Peng Fan <van.freenix@gmail.com> wrote: > The current pad DSE for QSPI is 60ohm. This setting cause > too strong drive to clock and data signals. Need to change > the DSE to 120ohm for better signal quality. > > Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
diff --git a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c index 112e6ab..92c9211 100644 --- a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c +++ b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c @@ -303,7 +303,7 @@ static void setup_iomux_uart(void) #define QSPI_PAD_CTRL1 \ (PAD_CTL_SRE_FAST | PAD_CTL_SPEED_MED | \ - PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_47K_UP | PAD_CTL_DSE_60ohm) + PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_47K_UP | PAD_CTL_DSE_120ohm) static iomux_v3_cfg_t const quadspi_pads[] = { MX6_PAD_NAND_WP_B__QSPI_A_SCLK | MUX_PAD_CTRL(QSPI_PAD_CTRL1),
The current pad DSE for QSPI is 60ohm. This setting cause too strong drive to clock and data signals. Need to change the DSE to 120ohm for better signal quality. Signed-off-by: Peng Fan <peng.fan@nxp.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> --- board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)