aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch
diff options
context:
space:
mode:
authorÁlvaro Fernández Rojas <noltari@gmail.com>2019-07-31 18:23:26 +0200
committerÁlvaro Fernández Rojas <noltari@gmail.com>2019-08-02 18:51:32 +0200
commit19226502bf6393706defe7f049c587b32c9b4f33 (patch)
tree0bff89a72b7006051a6eec1ac3c0c9250490cf4f /target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch
parent66458c49aa14ebc9ba2e4f9b6a323b8ff122807b (diff)
downloadupstream-19226502bf6393706defe7f049c587b32c9b4f33.tar.gz
upstream-19226502bf6393706defe7f049c587b32c9b4f33.tar.bz2
upstream-19226502bf6393706defe7f049c587b32c9b4f33.zip
brcm2708: update to latest patches from the RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch53
1 files changed, 0 insertions, 53 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch b/target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch
deleted file mode 100644
index f4780aecf1..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0614-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch
+++ /dev/null
@@ -1,53 +0,0 @@
-From ace78bef08082eb8971b87b28525926cd86b68c1 Mon Sep 17 00:00:00 2001
-From: Eric Anholt <eric@anholt.net>
-Date: Thu, 2 May 2019 15:11:05 -0700
-Subject: [PATCH 614/703] clk: bcm2835: Add support for setting leaf clock
- rates while running.
-
-As long as you wait for !BUSY, you can do glitch-free updates of clock
-rate while the clock is running.
-
-Signed-off-by: Eric Anholt <eric@anholt.net>
----
- drivers/clk/bcm/clk-bcm2835.c | 22 +++++++++++++---------
- 1 file changed, 13 insertions(+), 9 deletions(-)
-
---- a/drivers/clk/bcm/clk-bcm2835.c
-+++ b/drivers/clk/bcm/clk-bcm2835.c
-@@ -1097,15 +1097,19 @@ static int bcm2835_clock_set_rate(struct
-
- spin_lock(&cprman->regs_lock);
-
-- /*
-- * Setting up frac support
-- *
-- * In principle it is recommended to stop/start the clock first,
-- * but as we set CLK_SET_RATE_GATE during registration of the
-- * clock this requirement should be take care of by the
-- * clk-framework.
-+ ctl = cprman_read(cprman, data->ctl_reg);
-+
-+ /* If the clock is running, we have to pause clock generation while
-+ * updating the control and div regs. This is glitchless (no clock
-+ * signals generated faster than the rate) but each reg access is two
-+ * OSC cycles so the clock will slow down for a moment.
- */
-- ctl = cprman_read(cprman, data->ctl_reg) & ~CM_FRAC;
-+ if (ctl & CM_ENABLE) {
-+ cprman_write(cprman, data->ctl_reg, ctl & ~CM_ENABLE);
-+ bcm2835_clock_wait_busy(clock);
-+ }
-+
-+ ctl &= ~CM_FRAC;
- ctl |= (div & CM_DIV_FRAC_MASK) ? CM_FRAC : 0;
- cprman_write(cprman, data->ctl_reg, ctl);
-
-@@ -1475,7 +1479,7 @@ 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_RATE_GATE | CLK_SET_PARENT_GATE;
-+ init.flags |= CLK_SET_PARENT_GATE;
-
- /* If the clock wasn't actually enabled at boot, it's not
- * critical.