From 42954857190b9df16d9d873ecc7f6cc38e013e44 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 9 Jul 2019 20:32:28 +0200 Subject: brcm2708: add linux 4.19 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709) Signed-off-by: Álvaro Fernández Rojas --- ...2835-Mark-used-PLLs-and-dividers-CRITICAL.patch | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.19/950-0023-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch (limited to 'target/linux/brcm2708/patches-4.19/950-0023-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch') diff --git a/target/linux/brcm2708/patches-4.19/950-0023-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch b/target/linux/brcm2708/patches-4.19/950-0023-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch new file mode 100644 index 0000000000..478d0c9987 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0023-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch @@ -0,0 +1,28 @@ +From 06ad042c1d3b3471c478fee39a7539ac39b752ff Mon Sep 17 00:00:00 2001 +From: Phil Elwell +Date: Mon, 13 Feb 2017 17:20:08 +0000 +Subject: [PATCH 023/703] 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 +--- + 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 +@@ -1362,6 +1362,11 @@ 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 = data; + -- cgit v1.2.3