2b1c6b21b5
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
47 lines
1.4 KiB
Diff
47 lines
1.4 KiB
Diff
From 9f73459ac27903bb52d831db29cb70a95189fdba Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Tue, 26 Apr 2016 11:44:59 -0700
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Subject: [PATCH] clk: bcm2835: Mark the VPU clock as critical
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The VPU clock is also the clock for our AXI bus, so we really can't
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disable it. This might have happened during boot if, for example,
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uart1 (aux_uart clock) probed and was then disabled before the other
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consumers of the VPU clock had probed.
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v2: Rewrite to use a .flags in bcm2835_clock_data, since other clocks
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will need this too.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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drivers/clk/bcm/clk-bcm2835.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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--- a/drivers/clk/bcm/clk-bcm2835.c
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+++ b/drivers/clk/bcm/clk-bcm2835.c
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@@ -446,6 +446,8 @@ struct bcm2835_clock_data {
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/* Number of fractional bits in the divider */
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u32 frac_bits;
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+ u32 flags;
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+
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bool is_vpu_clock;
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bool is_mash_clock;
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};
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@@ -1242,7 +1244,7 @@ static struct clk *bcm2835_register_cloc
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init.parent_names = parents;
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init.num_parents = data->num_mux_parents;
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init.name = data->name;
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- init.flags = CLK_IGNORE_UNUSED;
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+ init.flags = data->flags | CLK_IGNORE_UNUSED;
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if (data->is_vpu_clock) {
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init.ops = &bcm2835_vpu_clock_clk_ops;
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@@ -1661,6 +1663,7 @@ static const struct bcm2835_clk_desc clk
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.div_reg = CM_VPUDIV,
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.int_bits = 12,
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.frac_bits = 8,
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+ .flags = CLK_IS_CRITICAL,
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.is_vpu_clock = true),
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/* clocks with per parent mux */
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