diff options
| author | Christian Amann <Christian.Amann@de.bosch.com> | 2018-08-21 17:04:09 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-08-24 16:00:48 -0400 |
| commit | 73e4ba98689e53c0d5c5e1155c10b7a5ca6d2c29 (patch) | |
| tree | 2f43683835929acb7465a2fb68d7d37b93b448ca /include | |
| parent | 344ca79509135f8a29f510e2e2b4fab81be187f1 (diff) | |
ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
Copy missing Kernel patch to make SLEWCTRL_SLOW available in device tree
and to correct the value of SLEWCTRL_FAST.
After this patch, the Kernel and U-boot device tree settings for
SLEWCTRL have the same effect.
Original Kernel patch message:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=424e0f039bfa8a51fb5c5178b6ece8baa4996469
"
According to AM335x TRM, Document spruh73l, Revised February 2015,
Section 9.2.2 Pad Control Registers, setting bit 6 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 and mdio) are left
unmodified as SLEWCTRL_FAST was the macro used and actual desired state.
Tested on am335x-gp-evm with no difference in software performance seen.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
"
Signed-off-by: Christian Amann <Christian.Amann@de.bosch.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dt-bindings/pinctrl/am33xx.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/dt-bindings/pinctrl/am33xx.h b/include/dt-bindings/pinctrl/am33xx.h index 2fbc804e1a..226f77246a 100644 --- a/include/dt-bindings/pinctrl/am33xx.h +++ b/include/dt-bindings/pinctrl/am33xx.h @@ -13,7 +13,8 @@ #define PULL_DISABLE (1 << 3) #define INPUT_EN (1 << 5) -#define SLEWCTRL_FAST (1 << 6) +#define SLEWCTRL_SLOW (1 << 6) +#define SLEWCTRL_FAST 0 /* update macro depending on INPUT_EN and PULL_ENA */ #undef PIN_OUTPUT |