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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-09 19:50:30 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-27 11:10:01 +0200 |
commit | 2340c646e6a5da658e114be2f721ff90853588d4 (patch) | |
tree | df9744d2344e71e8c5d1b75c3e1528bc474313fe /target/linux/brcm2708/patches-4.19/950-0610-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch | |
parent | 81d0da118694feb874f992093063a2852285d194 (diff) | |
download | upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.gz upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.bz2 upstream-2340c646e6a5da658e114be2f721ff90853588d4.zip |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0610-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0610-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0610-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch b/target/linux/brcm2708/patches-4.19/950-0610-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch deleted file mode 100644 index fb33e0e12b..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0610-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch +++ /dev/null @@ -1,53 +0,0 @@ -From acf164cd389fb272e51d90a381927e9bca67a113 Mon Sep 17 00:00:00 2001 -From: Eric Anholt <eric@anholt.net> -Date: Thu, 2 May 2019 15:11:05 -0700 -Subject: [PATCH 610/725] 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. |