brcm2708: remove linux 4.4 support

[openwrt/staging/yousong.git] / target / linux / brcm2708 / patches-4.4 / 0252-clk-bcm2835-add-a-round-up-ability-to-the-clock-divi.patch

diff --git a/target/linux/brcm2708/patches-4.4/0252-clk-bcm2835-add-a-round-up-ability-to-the-clock-divi.patch b/target/linux/brcm2708/patches-4.4/0252-clk-bcm2835-add-a-round-up-ability-to-the-clock-divi.patch
deleted file mode 100644 (file)
index 65aed5c..0000000
--- a/target/linux/brcm2708/patches-4.4/0252-clk-bcm2835-add-a-round-up-ability-to-the-clock-divi.patch
+++ /dev/null
@@ -1,69 +0,0 @@
-From e17280a589eede384ca578a4f1f35a1f3b066360 Mon Sep 17 00:00:00 2001
-From: Remi Pommarel <repk@triplefau.lt>
-Date: Sun, 6 Dec 2015 17:22:46 +0100
-Subject: [PATCH] clk: bcm2835: add a round up ability to the clock divisor
-
-Make bcm2835_clock_choose_div to optionally round up the chosen MASH divisor
-so that the resulting average rate will not be higher than the requested one.
-
-Signed-off-by: Remi Pommarel <repk@triplefau.lt>
-Reviewed-by: Eric Anholt <eric@anholt.net>
-Signed-off-by: Michael Turquette <mturquette@baylibre.com>
-(cherry picked from commit 9c95b32ca09364e4687b72c4e17b78dc1c420026)
----
- drivers/clk/bcm/clk-bcm2835.c | 22 ++++++++++++----------
- 1 file changed, 12 insertions(+), 10 deletions(-)
-
---- a/drivers/clk/bcm/clk-bcm2835.c
-+++ b/drivers/clk/bcm/clk-bcm2835.c
-@@ -1166,22 +1166,24 @@ static int bcm2835_clock_is_on(struct cl
- 
- static u32 bcm2835_clock_choose_div(struct clk_hw *hw,
-                                   unsigned long rate,
--                                  unsigned long parent_rate)
-+                                  unsigned long parent_rate,
-+                                  bool round_up)
- {
-       struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
-       const struct bcm2835_clock_data *data = clock->data;
--      u32 unused_frac_mask = GENMASK(CM_DIV_FRAC_BITS - data->frac_bits, 0);
-+      u32 unused_frac_mask =
-+              GENMASK(CM_DIV_FRAC_BITS - data->frac_bits, 0) >> 1;
-       u64 temp = (u64)parent_rate << CM_DIV_FRAC_BITS;
-+      u64 rem;
-       u32 div;
- 
--      do_div(temp, rate);
-+      rem = do_div(temp, rate);
-       div = temp;
- 
--      /* Round and mask off the unused bits */
--      if (unused_frac_mask != 0) {
--              div += unused_frac_mask >> 1;
--              div &= ~unused_frac_mask;
--      }
-+      /* Round up and mask off the unused bits */
-+      if (round_up && ((div & unused_frac_mask) != 0 || rem != 0))
-+              div += unused_frac_mask + 1;
-+      div &= ~unused_frac_mask;
- 
-       /* clamp to min divider of 1 */
-       div = max_t(u32, div, 1 << CM_DIV_FRAC_BITS);
-@@ -1221,7 +1223,7 @@ static long bcm2835_clock_round_rate(str
-                                    unsigned long *parent_rate)
- {
-       struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
--      u32 div = bcm2835_clock_choose_div(hw, rate, *parent_rate);
-+      u32 div = bcm2835_clock_choose_div(hw, rate, *parent_rate, false);
- 
-       return bcm2835_clock_rate_from_divisor(clock, *parent_rate, div);
- }
-@@ -1290,7 +1292,7 @@ static int bcm2835_clock_set_rate(struct
-       struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
-       struct bcm2835_cprman *cprman = clock->cprman;
-       const struct bcm2835_clock_data *data = clock->data;
--      u32 div = bcm2835_clock_choose_div(hw, rate, parent_rate);
-+      u32 div = bcm2835_clock_choose_div(hw, rate, parent_rate, false);
- 
-       cprman_write(cprman, data->div_reg, div);
-