According to AM437x TRM, Document SPRUHL7B, Revised December 2014, Section 7.2.1 Pad Control Registers, setting bit 19 of the pad control registers actually sets the SLEWCTRL value to slow rather than fast as the current macro indicates. Introduce a new macro, SLEWCTRL_SLOW, that sets the bit, and modify SLEWCTRL_FAST to 0 but keep it for completeness. Current users of the macro (i2c, mdio, and uart) are left unmodified as SLEWCTRL_FAST was the macro used and actual desired state. Tested on am437x-gp-evm with no difference in software performance seen. Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx> --- include/dt-bindings/pinctrl/am43xx.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/dt-bindings/pinctrl/am43xx.h b/include/dt-bindings/pinctrl/am43xx.h index 9c2e4f8..5f4d0189 100644 --- a/include/dt-bindings/pinctrl/am43xx.h +++ b/include/dt-bindings/pinctrl/am43xx.h @@ -18,7 +18,8 @@ #define PULL_DISABLE (1 << 16) #define PULL_UP (1 << 17) #define INPUT_EN (1 << 18) -#define SLEWCTRL_FAST (1 << 19) +#define SLEWCTRL_SLOW (1 << 19) +#define SLEWCTRL_FAST 0 #define DS0_PULL_UP_DOWN_EN (1 << 27) #define PIN_OUTPUT (PULL_DISABLE) -- 2.3.0 -- 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
