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authorÁlvaro Fernández Rojas <noltari@gmail.com>2021-02-18 18:04:33 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2021-02-18 23:42:32 +0100
commitf07e572f6447465d8938679533d604e402b0f066 (patch)
treecb333bd2a67e59e7c07659514850a0fd55fc825e /target/linux/bcm27xx/patches-5.4/950-0220-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch
parent5d3a6fd970619dfc55f8259035c3027d7613a2a6 (diff)
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bcm27xx: import latest patches from the RPi foundation
bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0220-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0220-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch71
1 files changed, 0 insertions, 71 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0220-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch b/target/linux/bcm27xx/patches-5.4/950-0220-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch
deleted file mode 100644
index bae0f84e1a..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0220-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch
+++ /dev/null
@@ -1,71 +0,0 @@
-From 1ee90bb75979c183e241c14f7c31d72cdb4bcc9b Mon Sep 17 00:00:00 2001
-From: Eric Anholt <eric@anholt.net>
-Date: Thu, 2 May 2019 15:24:04 -0700
-Subject: [PATCH] clk: bcm2835: Allow reparenting leaf clocks while
- they're running.
-
-This falls under the same "we can reprogram glitch-free as long as we
-pause generation" rule as updating the div/frac fields. This can be
-used for runtime reclocking of V3D to manage power leakage.
-
-Signed-off-by: Eric Anholt <eric@anholt.net>
----
- drivers/clk/bcm/clk-bcm2835.c | 19 ++++++++++++++++---
- 1 file changed, 16 insertions(+), 3 deletions(-)
-
---- a/drivers/clk/bcm/clk-bcm2835.c
-+++ b/drivers/clk/bcm/clk-bcm2835.c
-@@ -1103,8 +1103,10 @@ static int bcm2835_clock_on(struct clk_h
- return 0;
- }
-
--static int bcm2835_clock_set_rate(struct clk_hw *hw,
-- unsigned long rate, unsigned long parent_rate)
-+static int bcm2835_clock_set_rate_and_parent(struct clk_hw *hw,
-+ unsigned long rate,
-+ unsigned long parent_rate,
-+ u8 parent)
- {
- struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
- struct bcm2835_cprman *cprman = clock->cprman;
-@@ -1126,6 +1128,11 @@ static int bcm2835_clock_set_rate(struct
- bcm2835_clock_wait_busy(clock);
- }
-
-+ if (parent != 0xff) {
-+ ctl &= ~(CM_SRC_MASK << CM_SRC_SHIFT);
-+ ctl |= parent << CM_SRC_SHIFT;
-+ }
-+
- ctl &= ~CM_FRAC;
- ctl |= (div & CM_DIV_FRAC_MASK) ? CM_FRAC : 0;
- cprman_write(cprman, data->ctl_reg, ctl);
-@@ -1137,6 +1144,12 @@ static int bcm2835_clock_set_rate(struct
- return 0;
- }
-
-+static int bcm2835_clock_set_rate(struct clk_hw *hw,
-+ unsigned long rate, unsigned long parent_rate)
-+{
-+ return bcm2835_clock_set_rate_and_parent(hw, rate, parent_rate, 0xff);
-+}
-+
- static bool
- bcm2835_clk_is_pllc(struct clk_hw *hw)
- {
-@@ -1320,6 +1333,7 @@ static const struct clk_ops bcm2835_cloc
- .unprepare = bcm2835_clock_off,
- .recalc_rate = bcm2835_clock_get_rate,
- .set_rate = bcm2835_clock_set_rate,
-+ .set_rate_and_parent = bcm2835_clock_set_rate_and_parent,
- .determine_rate = bcm2835_clock_determine_rate,
- .set_parent = bcm2835_clock_set_parent,
- .get_parent = bcm2835_clock_get_parent,
-@@ -1498,7 +1512,6 @@ static struct clk_hw *bcm2835_register_c
- init.ops = &bcm2835_vpu_clock_clk_ops;
- } else {
- init.ops = &bcm2835_clock_clk_ops;
-- init.flags |= CLK_SET_PARENT_GATE;
-
- /* If the clock wasn't actually enabled at boot, it's not
- * critical.