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arch/risc-v/src/mpfs/hardware/mpfs250t_484_pinmap.h: Lower the default drive strength for MSSIO GPIOS

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The default drive strength was way too high for normal GPIO usage, causing overshoots & clitches

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
This commit is contained in:
Jukka Laitinen 2022-10-27 15:07:57 +04:00 • committed by Xiang Xiao
parent 67a60d77dd
commit b2e239784f
1 changed files with 20 additions and 3 deletions
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23
arch/risc-v/src/mpfs/hardware/mpfs250t_484_pinmap.h
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@ -79,9 +79,26 @@
#define MSSIO_MUX_BANK_REG(bank,pin) (MPFS_SYSREG_BASE + \
MSSIO_MUX_BANK_REG_OFFSET(bank,pin))
/* Default EC configuration for all GPIOS */
#define MSSIO_EC_DEFAULT GPIO_EC_DRVSTR(0x5)
#define MSSIO_EC_USB_DEFAULT (GPIO_EC_BUFM(1) | GPIO_EC_DRVSTR(0x5) | GPIO_PULLUP)
/* Drive strenght configuration in mA
* The following bit combinations are from the reference design.
*/
#define MSSIO_DRV_STR_2 2
#define MSSIO_DRV_STR_4 3
#define MSSIO_DRV_STR_6 4
#define MSSIO_DRV_STR_8 5
#define MSSIO_DRV_STR_10 6
#define MSSIO_DRV_STR_12 7
#define MSSIO_DRV_STR_16 10
#define MSSIO_DRV_STR_20 12
/* Default EC drive strength configuration for all GPIOS is 2 mA */
#define MSSIO_EC_DEFAULT GPIO_EC_DRVSTR(MSSIO_DRV_STR_2)
/* Default EC drive strength configuration for USB lines is 8 mA */
#define MSSIO_EC_USB_DEFAULT (GPIO_EC_BUFM(1) | GPIO_EC_DRVSTR(MSSIO_DRV_STR_8) | GPIO_PULLUP)
/* Basic GPIO definitions for MSSIO */