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soc: dts: pinctrl: support the configurations which apply for LVDS pads

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support the configurations which apply for LVDS pads
+ termination resistor
+ current reference control
+ rx current boost

Signed-off-by: Tu Nguyen Van <tu.nguyenvan@nxp.com>
This commit is contained in:
Tu Nguyen Van 2024-09-09 14:26:25 +07:00 • committed by Henrik Brix Andersen
commit 81f889d297
2 changed files with 34 additions and 8 deletions
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37
dts/bindings/pinctrl/nxp,s32ze-pinctrl.yaml
View file

@ -1,4 +1,4 @@
# Copyright 2022 NXP
# Copyright 2022, 2024 NXP
# SPDX-License-Identifier: Apache-2.0
description: |
@ -57,13 +57,13 @@ description: |
- internal pull not enabled
- open drain disabled
- slew rate 4 (see description in property below).
- termination resistor disabled (affect LVDS pads only).
- current reference control disabled (affect LVDS pads only).
- Rx current boost disabled (affect LVDS pads only).
Additionally, Safe Mode is always disabled (reset value) and configuration that
only applies to LVDS pads, which are not supported, default to reset values:
- termination resistor disabled
- receiver single ended
- current reference control disabled
- Rx current boost disabled.
Additionally:
- Safe Mode is always kept as reset value (disabled).
- Receiver Select is always kept as reset value (enables the differential vref based receiver).
compatible: "nxp,s32ze-pinctrl"
@ -116,3 +116,26 @@ child-binding:
5: FMAX_33 = 50 MHz
6: FMAX_33 = 50 MHz
7: FMAX_33 = 1 MHz
nxp,current-reference-control:
type: boolean
description: |
This configuration applies the current reference control to
the associated pin. It is only applicable to LVDS pads and
has no effect on other types of pads
nxp,termination-resistor:
type: boolean
description: |
This configuration applies the termination resistor to
the associated pin. It is only applicable to LVDS pads and
has no effect on other types of pads
nxp,rx-current-boost:
type: boolean
description: |
RX LVDS Current Boost
Boosts RX IO current. It is only applicable to LVDS pads and
has no effect on other types of pads
0: Current reference is 200 μA; supports data rate up to 320 Mbaud
1: Current reference is 1 mA; supports data rate up to 420 Mbaud

5
soc/nxp/s32/s32ze/pinctrl_soc.h
View file

@ -53,7 +53,10 @@
SIUL2_MSCR_PUS(DT_PROP(group, bias_pull_up)) | \
SIUL2_MSCR_SRE(DT_PROP(group, slew_rate)) | \
SIUL2_MSCR_ODE(DT_PROP(group, drive_open_drain) && \
DT_PROP(group, output_enable)) \
DT_PROP(group, output_enable)) | \
SIUL2_MSCR_TRC(DT_PROP(group, nxp_termination_resistor)) | \
SIUL2_MSCR_CREF(DT_PROP(group, nxp_current_reference_control)) | \
SIUL2_MSCR_RXCB(DT_PROP(group, nxp_rx_current_boost)) \
}, \
.imcr = { \
.inst = NXP_S32_PINMUX_GET_IMCR_SIUL2_IDX(value), \