From a46a675cb976d12bf88fcb5a3fe1df49d4387fd8 Mon Sep 17 00:00:00 2001
From: Skr-niao <chalkin@yeah.net>
Date: Sun, 13 Aug 2023 15:37:07 +0800
Subject: [PATCH] Platform/ROCK-5B: Enable fan pwm at 40kHz, 60% duty

---
 .../RockchipPlatformLib/RockchipPlatformLib.c      | 14 ++++++++++++++
 .../RockchipPlatformLib/RockchipPlatformLib.inf    |  1 +
 2 files changed, 15 insertions(+)

diff --git a/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.c b/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.c
index b98580ac8..5bef97d3a 100644
--- a/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.c
+++ b/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.c
@@ -11,6 +11,7 @@
 #include <Library/GpioLib.h>
 #include <Library/RK806.h>
 #include <Library/Rk3588Pcie.h>
+#include <Library/PWMLib.h>
 #include <Soc.h>
 
 static struct regulator_init_data rk806_init_data[] = {
@@ -328,4 +329,17 @@ PlatformEarlyInit (
   )
 {
   // Configure various things specific to this platform
+  DEBUG((EFI_D_WARN, "PlatformEarlyInit called\n"));
+  GpioPinSetFunction (0, GPIO_PIN_PC0, 0x3); // PWM1_M0
+
+  PWM_DATA pwm_data = {
+    .ControllerID = PWM_CONTROLLER0,
+    .ChannelID = PWM_CHANNEL1,
+    .PeriodNs = 25000,
+    .DutyNs = 15000,
+    .Polarity = FALSE,
+  }; // PWM0_CH1
+
+  RkPwmSetConfig(&pwm_data);
+  RkPwmEnable(&pwm_data);
 }
diff --git a/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.inf b/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.inf
index ec569eaf3..b0ca9550e 100644
--- a/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.inf
+++ b/edk2-rockchip/Platform/Radxa/ROCK5B/Library/RockchipPlatformLib/RockchipPlatformLib.inf
@@ -28,6 +28,7 @@
   SerialPortLib
   CruLib
   GpioLib
+  PWMLib
 
 [Sources.common]
   RockchipPlatformLib.c