Patch "clk: bcm2835: Fix setting of PLL divider clock rates" has been added to the 4.5-stable tree

This is a note to let you know that I've just added the patch titled

clk: bcm2835: Fix setting of PLL divider clock rates

to the 4.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
clk-bcm2835-fix-setting-of-pll-divider-clock-rates.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Eric Anholt <[email protected]>
Date: Mon, 15 Feb 2016 19:03:57 -0800
Subject: clk: bcm2835: Fix setting of PLL divider clock rates

From: Eric Anholt <[email protected]>

commit 773b3966dd3cdaeb68e7f2edfe5656abac1dc411 upstream.

Our dividers weren't being set successfully because CM_PASSWORD wasn't included in the register write. It looks easier to just compute the divider to write ourselves than to update clk-divider for the ability to OR in some arbitrary bits on write.

Fixes about half of the video modes on my HDMI monitor (everything except 720x400).

---
 drivers/clk/bcm/clk-bcm2835.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

@@ -1107,13 +1107,15 @@ static int bcm2835_pll_divider_set_rate(
 	struct bcm2835_pll_divider *divider = bcm2835_pll_divider_from_hw(hw);
 	struct bcm2835_cprman *cprman = divider->cprman;
 	const struct bcm2835_pll_divider_data *data = divider->data;
-	u32 cm;
-	int ret;
+	u32 cm, div, max_div = 1 << A2W_PLL_DIV_BITS;
 
-	ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
-	if (ret)
-		return ret;
+	div = DIV_ROUND_UP_ULL(parent_rate, rate);
 
+	div = min(div, max_div);
+	if (div == max_div)
+		div = 0;
+
+	cprman_write(cprman, data->a2w_reg, div);
 	cm = cprman_read(cprman, data->cm_reg);
 	cprman_write(cprman, data->cm_reg, cm | data->load_mask);
 	cprman_write(cprman, data->cm_reg, cm & ~data->load_mask);

Patches currently in stable-queue which might be from [email protected] are

queue-4.5/clk-bcm2835-fix-setting-of-pll-divider-clock-rates.patch queue-4.5/pinctrl-bcm2835-fix-cut-and-paste-error-in-pull-parsing.patch queue-4.5/drm-vc4-return-efault-on-copy_from_user-failure.patch