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ARM: imx6: DHCOM i.MX6 PDK: enable pad pull ups of SS lines of spi used for boot

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It turned out that after a reset the boot process from the spi bootflash is
disturbed by other spi slave devices connected to DHCOM SPI1, which uses the
same spi interface with a different SS line.

Therefore the pad pull ups are enabled.

Signed-off-by: Ludwig Zenz <lzenz@dh-electronics.com>
This commit is contained in:
Ludwig Zenz 2019-07-01 09:42:09 +02:00 committed by Stefano Babic
parent 9d364ebd05
commit 6e75cb237d
1 changed files with 7 additions and 2 deletions
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9
board/dhelectronics/dh_imx6/dh_imx6_spl.c
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@ -440,8 +440,13 @@ static void setup_iomux_sd(void)
/* SPI */
static iomux_v3_cfg_t const ecspi1_pads[] = {
/* SS0 */
IOMUX_PADS(PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(SPI_PAD_CTRL)),
/* SS0 - SS of boot flash */
IOMUX_PADS(PAD_EIM_EB2__GPIO2_IO30 |
MUX_PAD_CTRL(SPI_PAD_CTRL | PAD_CTL_PUS_100K_UP)),
/* SS2 - SS of DHCOM SPI1 */
IOMUX_PADS(PAD_KEY_ROW2__GPIO4_IO11 |
MUX_PAD_CTRL(SPI_PAD_CTRL | PAD_CTL_PUS_100K_UP)),
IOMUX_PADS(PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL)),