From 2200ab6a7403f4fcd052c55ca328fc942f9392b6 Mon Sep 17 00:00:00 2001
From: Eugen Hristev <eugen.hristev@microchip.com>
Date: Tue, 24 Sep 2019 10:39:09 +0000
Subject: [PATCH] clk: at91: sam9x60: fix programmable clock
Git-commit: 2200ab6a7403f4fcd052c55ca328fc942f9392b6
Patch-mainline: v5.4-rc7
References: git-fixes bnc#1151927 5.3.15

The prescaler mask for sam9x60 must be 0xff (8 bits).
Being set to 0, means that we cannot set any prescaler, thus the
programmable clocks do not work (except the case with prescaler 0)
Set the mask accordingly in layout struct.

Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver")
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Link: https://lkml.kernel.org/r/1569321191-27606-1-git-send-email-eugen.hristev@microchip.com
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/clk/at91/sam9x60.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index 9790ddfa5b3c..86238d5ecb4d 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -43,6 +43,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
 };
 
 static const struct clk_programmable_layout sam9x60_programmable_layout = {
+	.pres_mask = 0xff,
 	.pres_shift = 8,
 	.css_mask = 0x1f,
 	.have_slck_mck = 0,
-- 
2.16.4