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board: imx6ull: Add disable PMIC_STBY_REQ

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Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the
SOC to request for a lower voltage during sleep. This is necessary
because the voltage is changing too slow for the SOC to wake up
properly.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
This commit is contained in:
Philippe Schenker 2019-04-09 17:24:12 +02:00 committed by Stefano Babic
parent 70a0467b92
commit c2f38bf0a0
1 changed files with 10 additions and 0 deletions
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10
board/toradex/colibri-imx6ull/colibri-imx6ull.c
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@ -50,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
#define LCD_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
PAD_CTL_DSE_48ohm)
#define MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR 0x2290040
#define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
#define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP)
@ -331,6 +333,14 @@ int board_late_init(void)
env_set("variant", "-wifi");
#endif
/*
* Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the
* SOC to request for a lower voltage during sleep. This is necessary
* because the voltage is changing too slow for the SOC to wake up
* properly.
*/
__raw_writel(0x8080, MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR);
#ifdef CONFIG_CMD_BMODE
add_board_boot_modes(board_boot_modes);
#endif