From dc9eb21332b0fc274cc69358032dc923da6dc306 Mon Sep 17 00:00:00 2001
From: Simon <47527944+Frooastside@users.noreply.github.com>
Date: Thu, 24 Mar 2022 19:08:22 +0100
Subject: add the ability to change the pwm frequency for the IS31FL3737B
 (#16718)

---
 drivers/led/issi/is31fl3737.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/led/issi/is31fl3737.c b/drivers/led/issi/is31fl3737.c
index 9f2a13de45..bce0c34b2c 100644
--- a/drivers/led/issi/is31fl3737.c
+++ b/drivers/led/issi/is31fl3737.c
@@ -57,6 +57,10 @@
 #    define ISSI_PERSISTENCE 0
 #endif
 
+#ifndef ISSI_PWM_FREQUENCY
+#    define ISSI_PWM_FREQUENCY 0b000 // PFS - IS31FL3737B only
+#endif
+
 #ifndef ISSI_SWPULLUP
 #    define ISSI_SWPULLUP PUR_0R
 #endif
@@ -159,7 +163,7 @@ void IS31FL3737_init(uint8_t addr) {
     // Set global current to maximum.
     IS31FL3737_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
     // Disable software shutdown.
-    IS31FL3737_write_register(addr, ISSI_REG_CONFIGURATION, 0x01);
+    IS31FL3737_write_register(addr, ISSI_REG_CONFIGURATION, ((ISSI_PWM_FREQUENCY & 0b111) << 3) | 0x01);
 
     // Wait 10ms to ensure the device has woken up.
     wait_ms(10);
-- 
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