Re: [PATCH 03/11] MIPS: pic32mzda: fix getting timer clock rate.

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Hi Purna,

On 17/05/16 06:05, Purna Chandra Mandal wrote:
PIC32 clock driver is now implemented as platform driver instead of
as part of of_clk_init(). It meants all the clock modules are available
quite late in the boot sequence. So request for CPU clock by clk_get_sys()
and clk_get_rate() to find c0_timer rate fails.

To fix this use PIC32 specific early clock functions implemented for early
console support.

Signed-off-by: Purna Chandra Mandal <purna.mandal@xxxxxxxxxxxxx>

---
Note: Please pull this complete series through the MIPS tree.

---

 arch/mips/pic32/pic32mzda/time.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/arch/mips/pic32/pic32mzda/time.c b/arch/mips/pic32/pic32mzda/time.c
index ca6a62b..62a0a78 100644
--- a/arch/mips/pic32/pic32mzda/time.c
+++ b/arch/mips/pic32/pic32mzda/time.c
@@ -11,13 +11,12 @@
  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  *  for more details.
  */
-#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/clocksource.h>
 #include <linux/init.h>
+#include <linux/irqdomain.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
-#include <linux/irqdomain.h>

 #include <asm/time.h>

@@ -58,16 +57,12 @@ unsigned int get_c0_compare_int(void)

 void __init plat_time_init(void)
 {
-	struct clk *clk;
+	unsigned long rate = pic32_get_pbclk(7);

pic32_get_pbclk() is defined in arch/mips/pic32/pic32mzda/early_clk.c. When CONFIG_EARLY_PRINTK isn't set, early_clk.c isn't compiled and so a linker error occurs.

Maybe it's best to always build the early_clk.c file, or perhaps there is a better place to put pic32_get_pbclk()?

Thanks,

Harvey





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