linux-kernel - [PATCH v4 26/27] clk: bcm2835: Don't cache the PLLB rate

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Message-Id: <264ad21afaae4a7098c3da59970d6cb9da1a8b0e.1591860665.git-series.maxime@cerno.tech>
Date:   Thu, 11 Jun 2020 09:32:15 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     linux-rpi-kernel@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        Maxime Ripard <maxime@...no.tech>
Subject: [PATCH v4 26/27] clk: bcm2835: Don't cache the PLLB rate

The PLLB rate will be changed through the firmware clocks drivers and will
change behind this drivers' back, so we don't want to cache the rate.

Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/clk/bcm/clk-bcm2835.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 846ea68b2c73..64e23733e6b7 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1700,7 +1700,8 @@ static const struct bcm2835_clk_desc clk_desc_array[] = {
 
 		.min_rate = 600000000u,
 		.max_rate = 3000000000u,
-		.max_fb_rate = BCM2835_MAX_FB_RATE),
+		.max_fb_rate = BCM2835_MAX_FB_RATE,
+		.flags = CLK_GET_RATE_NOCACHE),
 	[BCM2835_PLLB_ARM]	= REGISTER_PLL_DIV(
 		SOC_ALL,
 		.name = "pllb_arm",
@@ -1710,7 +1711,7 @@ static const struct bcm2835_clk_desc clk_desc_array[] = {
 		.load_mask = CM_PLLB_LOADARM,
 		.hold_mask = CM_PLLB_HOLDARM,
 		.fixed_divider = 1,
-		.flags = CLK_SET_RATE_PARENT),
+		.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE),
 
 	/*
 	 * PLLC is the core PLL, used to drive the core VPU clock.
-- 
git-series 0.9.1