From bc8a7f713df4f487b67489fe1a5e18bc957d44d1 Mon Sep 17 00:00:00 2001
From: Serg Podtynnyi <serg@podtynnyi.com>
Date: Sat, 3 May 2025 17:34:28 +0700
Subject: [PATCH] arch/arm/rp23xx: add dsp/fpu extensions support

Each Arm Cortex-M33 processor in RP2350 is configured with Single
precision FPU and DSP extension
---
 arch/arm/Kconfig                   | 2 ++
 arch/arm/src/rp23xx/rp23xx_start.c | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b1006f0bbd3..3bf480bc21a 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -387,6 +387,8 @@ config ARCH_CHIP_RP23XX
 	select ARCH_HAVE_MULTICPU
 	select ARCH_HAVE_I2CRESET
 	select ARM_HAVE_WFE_SEV
+	select ARM_HAVE_DSP
+	select ARCH_HAVE_FPU
 	select ARCH_HAVE_CUSTOM_TESTSET
 	select ARCH_HAVE_PWM_MULTICHAN
 	select ARCH_BOARD_COMMON
diff --git a/arch/arm/src/rp23xx/rp23xx_start.c b/arch/arm/src/rp23xx/rp23xx_start.c
index 61881cd72fc..2f84248bcf2 100644
--- a/arch/arm/src/rp23xx/rp23xx_start.c
+++ b/arch/arm/src/rp23xx/rp23xx_start.c
@@ -156,6 +156,10 @@ void __start(void)
       putreg32(0, RP23XX_SIO_SPINLOCK(safe_spinlocks[i]));
     }
 
+  /* Initialize the FPU */
+
+  arm_fpuconfig();
+
   /* Configure the uart so that we can get debug output as soon as possible */
 
   rp23xx_lowsetup();