linux-kernel - [PATCH 2/2] clk: microchip: core: allow driver to be compiled with COMPILE

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Message-Id: <20251125-clk-microchip-fixes-v1-2-6c1f5573d1b9@redhat.com>
Date: Tue, 25 Nov 2025 14:39:55 -0500
From: Brian Masney <bmasney@...hat.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Maxime Ripard <mripard@...nel.org>
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Brian Masney <bmasney@...hat.com>
Subject: [PATCH 2/2] clk: microchip: core: allow driver to be compiled with
 COMPILE_TEST

This driver currently only supports builds against a PIC32 target. To
avoid future breakage in the future, let's update the Kconfig and the
driver so that it can be built with CONFIG_COMPILE_TEST enabled.

Signed-off-by: Brian Masney <bmasney@...hat.com>
---
 drivers/clk/microchip/Kconfig    |  2 +-
 drivers/clk/microchip/clk-core.c | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/microchip/Kconfig b/drivers/clk/microchip/Kconfig
index 1b9e43eb54976b219a0277cc971f353fd6af226a..1e56a057319d97e20440fe4e107d26fa85c95ab1 100644
--- a/drivers/clk/microchip/Kconfig
+++ b/drivers/clk/microchip/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
 config COMMON_CLK_PIC32
-	def_bool COMMON_CLK && MACH_PIC32
+	def_bool (COMMON_CLK && MACH_PIC32) || COMPILE_TEST
 
 config MCHP_CLK_MPFS
 	bool "Clk driver for PolarFire SoC"
diff --git a/drivers/clk/microchip/clk-core.c b/drivers/clk/microchip/clk-core.c
index a0163441dfe5c1dfc27dae48e64cf3cb3d6b764f..c58f4289525d5d2c8449b96119fc70a3829d9f7e 100644
--- a/drivers/clk/microchip/clk-core.c
+++ b/drivers/clk/microchip/clk-core.c
@@ -9,9 +9,17 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/iopoll.h>
-#include <asm/mach-pic32/pic32.h>
 #include <asm/traps.h>
 
+#if !defined(CONFIG_MACH_PIC32) && defined(CONFIG_COMPILE_TEST)
+#define PIC32_CLR(_reg)		((_reg) + 0x04)
+#define PIC32_SET(_reg)		((_reg) + 0x08)
+#define PIC32_INV(_reg)		((_reg) + 0x0C)
+#define pic32_syskey_unlock()
+#else
+#include <asm/mach-pic32/pic32.h>
+#endif
+
 #include "clk-core.h"
 
 /* OSCCON Reg fields */

-- 
2.51.1