From 7961d2943d70c75d1aaa8f495243a61a397a03ff Mon Sep 17 00:00:00 2001
From: Markus Gyger <182590275+magy00@users.noreply.github.com>
Date: Sat, 21 Dec 2024 22:36:57 +0700
Subject: [PATCH] =?UTF-8?q?Overclock=20to=20153.6=20MHz=20(instead=20of=20?=
 =?UTF-8?q?147.6=20MHz)=20for=20I=C2=B2S=2048=20kHz=20sample=20rate=20(#27?=
 =?UTF-8?q?08)?=
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---
 docs/i2s.rst              | 2 +-
 libraries/I2S/src/I2S.cpp | 6 ++----
 libraries/I2S/src/I2S.h   | 2 +-
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/docs/i2s.rst b/docs/i2s.rst
index 2aadcf1..3e1e95a 100644
--- a/docs/i2s.rst
+++ b/docs/i2s.rst
@@ -71,7 +71,7 @@ sample rate on-the-fly.
 bool setSysClk(int samplerate) 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Changes the PICO system clock to optimise for the desired samplerate. 
-The clock changes to 147.6 MHz for samplerates that are a multiple of 8 kHz, and 135.6 MHz for multiples of 11.025 kHz.
+The clock changes to 153.6 MHz for samplerates that are a multiple of 8 kHz, and 135.6 MHz for multiples of 11.025 kHz.
 Note that using ``setSysClk()`` may affect the timing of other sysclk-dependent functions.
 Should be called before any I2S functions and any other sysclk dependent initialisations.
 
diff --git a/libraries/I2S/src/I2S.cpp b/libraries/I2S/src/I2S.cpp
index d3387c3..b3e7165 100644
--- a/libraries/I2S/src/I2S.cpp
+++ b/libraries/I2S/src/I2S.cpp
@@ -123,12 +123,10 @@ bool I2S::setFrequency(int newFreq) {
 
 bool I2S::setSysClk(int samplerate) { // optimise sys_clk for desired samplerate
     if (samplerate % 11025 == 0) {
-        set_sys_clock_khz(I2SSYSCLK_44_1, false); // 147.6 unsuccessful - no I2S no USB
-        return true;
+        return set_sys_clock_khz(I2SSYSCLK_44_1, false);
     }
     if (samplerate % 8000 == 0) {
-        set_sys_clock_khz(I2SSYSCLK_8, false);
-        return true;
+        return set_sys_clock_khz(I2SSYSCLK_8, false);
     }
     return false;
 }
diff --git a/libraries/I2S/src/I2S.h b/libraries/I2S/src/I2S.h
index dfb62f9..bb60e53 100644
--- a/libraries/I2S/src/I2S.h
+++ b/libraries/I2S/src/I2S.h
@@ -163,5 +163,5 @@ private:
     int _sm, _smMCLK;
 
     static const int I2SSYSCLK_44_1 = 135600; // 44.1, 88.2 kHz sample rates
-    static const int I2SSYSCLK_8 = 147600;  // 8k, 16, 32, 48, 96, 192 kHz
+    static const int I2SSYSCLK_8 = 153600;  // 8k, 16, 32, 48, 96, 192 kHz
 };