docs: point md files in master to main/HEADmaster

Master md files are out of date. Point to main branch in case someone
lands in master branch from an old link.

BUG=b:180952272,b:180921286
BRANCH=None
TEST=Preview changes with gerrit

Exempt-From-Owner-Approval: fixing docs
Change-Id: I6583b6c7fc21248eb49a6cd71e077fbdb5de2435
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2727846
Reviewed-by: Sean Abraham <seanabraham@chromium.org>
Reviewed-by: Rob Barnes <robbarnes@google.com>
Auto-Submit: Sean Abraham <seanabraham@chromium.org>
Tested-by: Sean Abraham <seanabraham@chromium.org>

1 files changed, 4 insertions, 91 deletions

diff --git a/docs/configuration/leds.md b/docs/configuration/leds.md
index 72a548a306..39f37b9d6f 100644
--- a/docs/configuration/leds.md
+++ b/docs/configuration/leds.md
@@ -1,92 +1,5 @@
-# Configure LEDs
+*** note
+**Warning: This document is old & has moved.  Please update any links:**<br>
+https://chromium.googlesource.com/chromiumos/platform/ec/+/HEAD/docs/configuration/leds.md
+***
 
-LEDs provide status about the following:
-
-- Dedicated battery state/charging state
-- Chromebook power
-- Adapter power
-- Left side USB-C port (battery state/charging state)
-- Right side USB-C port (battery state/charging state)
-- Recovery mode
-- Debug mode
-
-LEDs can be configured as simple GPIOs, with on/off control only, or as PWM with
-adjustment brightness and color.
-
-## Config options
-
-In [config.h], search for options that start with `CONFIG_LED*` and evaluate
-whether each option is appropriate to add to `baseboard.h` or `board.h`.
-
-- `CONFIG_LED_COMMON` - Should be defined for both GPIO and PWM style LEDs.
-- `CONFIG_LED_ONOFF_STATES` - used for GPIO controlled LEDs
-- `CONFIG_LED_PWM` - used for PWM controlled LEDs.  You must also define
-  `CONFIG_PWM` when using PWM controlled LEDs.
-
-## Feature Parameters
-
-- `CONFIG_LED_PWM_COUNT <count>` - Must be defined when using PWM LEDs
-
-Override the following parameters when using PWM LEDs if you don't want to use
-the recommended LED color settings.
-- `CONFIG_LED_PWM_CHARGE_COLOR <ec_led_color>`
-- `CONFIG_LED_PWM_NEAR_FULL_COLOR <ec_led_color>`
-- `CONFIG_LED_PWM_CHARGE_ERROR_COLOR <ec_led_color>`
-- `CONFIG_LED_PWM_SOC_ON_COLOR <ec_led_color>`
-- `CONFIG_LED_PWM_SOC_SUSPEND_COLOR <ec_led_color>`
-- `CONFIG_LED_PWM_LOW_BATT_COLOR <ec_led_color>`
-
-## GPIOs and Alternate Pins
-
-For GPIO based LEDs, create `GPIO()` entries for all signals that connect to
-platform LEDs. The default state of the pins should be set so that the LED is
-off (typically high output).
-
-For PWM LEDs, configure the `ALTERNATE()` macro, setting the module type to
-`MODULE_PWM`.
-
-## Data structures
-
-For GPIO based LEDs:
-- `struct led_descriptor led_bat_state_table[LED_NUM_STATES][LED_NUM_PHASES]` -
-  Must be defined when `CONFIG_LED_ONOFF_STATES` is used. Defines the LED states
-  for the platform for various charging states.
-
-For PWM based LEDs:
-- `const enum ec_led_id supported_led_ids[]` - Defines the LED type for all PWM
-  LEDs in the system.  See [./include/ec_commands.h] for a description of the
-  supported LED types.
-- `struct pwm_led led_color_map[]` - Defines the PWM intensity of the individual
-  LEDs to generate the corresponding color. This table allows for custom tuning
-  of the LED brightness and color.
-- `const struct pwm_channels[]` - Configures the PWM module, refer to the
-  [Configuring PWM](./pwm.md) section for details.
-
-See the [GPIO](./gpio.md) documentation for additional details on the GPIO
-macros.
-
-## Tasks
-
-None required by this feature.
-
-## Testing and Debugging
-
-### Console Commands
-
-- `pwmduty` - *TODO* add description.
-- `gpioset` - For GPIO based LEDs, this command lets you directly change the
-  state of the LED.
-- `gpioget` - For GPIO based LEDs, this reads current state of the pin. If the
-  current state does not track changes made with `gpioset`, check your board for
-  stuck at high or stuck at low condition.
-
-If you're having problems with a PWM LED, try reconfiguring the pin as a GPIO to
-verify the board operation independent of the PWM module.
-
-## LED Driver Chips
-
-LED driver chips are used to control the LCD panel backlight. The backlight
-control is separate from the platform LEDs.
-
-[config.h]: ../new_board_checklist.md#config_h
-[./include/ec_commands.h]: ../../include/ec_commands.h
\ No newline at end of file