mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
44 lines
1.4 KiB
Diff
44 lines
1.4 KiB
Diff
From 4d372013a839ae71582004fbc1aa1905c73d1497 Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Wed, 28 Sep 2016 17:58:52 -0700
|
|
Subject: [PATCH] clk: bcm2835: Clamp the PLL's requested rate to the hardware
|
|
limits.
|
|
|
|
Fixes setting low-resolution video modes on HDMI. Now the PLLH_PIX
|
|
divider adjusts itself until the PLLH is within bounds.
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
---
|
|
drivers/clk/bcm/clk-bcm2835.c | 11 ++++-------
|
|
1 file changed, 4 insertions(+), 7 deletions(-)
|
|
|
|
--- a/drivers/clk/bcm/clk-bcm2835.c
|
|
+++ b/drivers/clk/bcm/clk-bcm2835.c
|
|
@@ -523,8 +523,12 @@ static long bcm2835_pll_rate_from_diviso
|
|
static long bcm2835_pll_round_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long *parent_rate)
|
|
{
|
|
+ struct bcm2835_pll *pll = container_of(hw, struct bcm2835_pll, hw);
|
|
+ const struct bcm2835_pll_data *data = pll->data;
|
|
u32 ndiv, fdiv;
|
|
|
|
+ rate = clamp(rate, data->min_rate, data->max_rate);
|
|
+
|
|
bcm2835_pll_choose_ndiv_and_fdiv(rate, *parent_rate, &ndiv, &fdiv);
|
|
|
|
return bcm2835_pll_rate_from_divisors(*parent_rate, ndiv, fdiv, 1);
|
|
@@ -629,13 +633,6 @@ static int bcm2835_pll_set_rate(struct c
|
|
u32 ana[4];
|
|
int i;
|
|
|
|
- if (rate < data->min_rate || rate > data->max_rate) {
|
|
- dev_err(cprman->dev, "%s: rate out of spec: %lu vs (%lu, %lu)\n",
|
|
- clk_hw_get_name(hw), rate,
|
|
- data->min_rate, data->max_rate);
|
|
- return -EINVAL;
|
|
- }
|
|
-
|
|
if (rate > data->max_fb_rate) {
|
|
use_fb_prediv = true;
|
|
rate /= 2;
|