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pinctrl: dra: dt-bindings: Fix pull enable/disable 

commit 23d9cec07c upstream.

The DRA74/72 control module pins have a weak pull up and pull down.
This is configured by bit offset 17. if BIT(17) is 1, a pull up is
selected, else a pull down is selected.

However, this pull resisstor is applied based on BIT(16) -
PULLUDENABLE - if BIT(18) is *0*, then pull as defined in BIT(17) is
applied, else no weak pulls are applied. We defined this in reverse.

Reference: Table 18-5 (Description of the pad configuration register
bits) in Technical Reference Manual Revision (DRA74x revision Q:
SPRUHI2Q Revised June 2014 and DRA72x revision F: SPRUHP2F - Revised
June 2014)

Fixes: 6e58b8f1da ("ARM: dts: DRA7: Add the dts files for dra7 SoC and dra7-evm board")
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nishanth Menon 2014-07-22 10:39:54 -05:00 committed by Greg Kroah-Hartman
parent 74020e9499
commit bc27211d16
1 changed files with 4 additions and 3 deletions
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7
include/dt-bindings/pinctrl/dra.h
View File

@ -30,7 +30,8 @@
#define MUX_MODE14 0xe
#define MUX_MODE15 0xf
#define PULL_ENA (1 << 16)
#define PULL_ENA (0 << 16)
#define PULL_DIS (1 << 16)
#define PULL_UP (1 << 17)
#define INPUT_EN (1 << 18)
#define SLEWCONTROL (1 << 19)
@ -38,10 +39,10 @@
#define WAKEUP_EVENT (1 << 25)
/* Active pin states */
#define PIN_OUTPUT 0
#define PIN_OUTPUT (0 | PULL_DIS)
#define PIN_OUTPUT_PULLUP (PIN_OUTPUT | PULL_ENA | PULL_UP)
#define PIN_OUTPUT_PULLDOWN (PIN_OUTPUT | PULL_ENA)
#define PIN_INPUT INPUT_EN
#define PIN_INPUT (INPUT_EN | PULL_DIS)
#define PIN_INPUT_SLEW (INPUT_EN | SLEWCONTROL)
#define PIN_INPUT_PULLUP (PULL_ENA | INPUT_EN | PULL_UP)
#define PIN_INPUT_PULLDOWN (PULL_ENA | INPUT_EN)