diff options
| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2022-05-16 23:40:32 +0200 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2022-05-17 15:11:22 +0200 |
| commit | 20ea6adbf199097c4f5f591ffee088340630dae4 (patch) | |
| tree | d6719d95e136611a1c25bbf7789652d6d402779d /target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch | |
| parent | bca05bd072180dc38ef740b37ded9572a6db1981 (diff) | |
| download | upstream-20ea6adbf199097c4f5f591ffee088340630dae4.tar.gz upstream-20ea6adbf199097c4f5f591ffee088340630dae4.tar.bz2 upstream-20ea6adbf199097c4f5f591ffee088340630dae4.zip | |
bcm27xx: add support for linux v5.15
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B
Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch b/target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch new file mode 100644 index 0000000000..8f004a80d9 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch @@ -0,0 +1,28 @@ +From 3ac4dc10f82935d6cfc759bb34e9686b391f3371 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Mon, 13 Feb 2017 17:20:08 +0000 +Subject: [PATCH] clk-bcm2835: Mark used PLLs and dividers CRITICAL + +The VPU configures and relies on several PLLs and dividers. Mark all +enabled dividers and their PLLs as CRITICAL to prevent the kernel from +switching them off. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + drivers/clk/bcm/clk-bcm2835.c | 5 +++++ + 1 file changed, 5 insertions(+) + +--- a/drivers/clk/bcm/clk-bcm2835.c ++++ b/drivers/clk/bcm/clk-bcm2835.c +@@ -1378,6 +1378,11 @@ bcm2835_register_pll_divider(struct bcm2 + divider->div.hw.init = &init; + divider->div.table = NULL; + ++ if (!(cprman_read(cprman, data->cm_reg) & data->hold_mask)) { ++ init.flags |= CLK_IS_CRITICAL; ++ divider->div.flags |= CLK_IS_CRITICAL; ++ } ++ + divider->cprman = cprman; + divider->data = divider_data; + |