diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2018-10-24 16:36:29 +0300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-11-14 20:16:28 +0300 |
| commit | e25080664adaecbd2bf0001ca3e66978fd6766b4 (patch) | |
| tree | dcfff48d5236c7b942f379b3a78f81ed7144b1c4 /drivers/clk/clk_zynq.c | |
| parent | 4854ebc57e88f371963b5fa12587a3dd5e116e79 (diff) | |
| download | u-boot-e25080664adaecbd2bf0001ca3e66978fd6766b4.tar.xz | |
clk: Remove DM_FLAG_PRE_RELOC flag in various drivers
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.
To mitigate this potential impact, the following changes are
implemented:
- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
drivers that support both statically declared devices and
configuration from device tree
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/clk/clk_zynq.c')
| -rw-r--r-- | drivers/clk/clk_zynq.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/clk/clk_zynq.c b/drivers/clk/clk_zynq.c index d647e0a01e..482f0937cb 100644 --- a/drivers/clk/clk_zynq.c +++ b/drivers/clk/clk_zynq.c @@ -480,7 +480,6 @@ U_BOOT_DRIVER(zynq_clk) = { .name = "zynq_clk", .id = UCLASS_CLK, .of_match = zynq_clk_ids, - .flags = DM_FLAG_PRE_RELOC, .ops = &zynq_clk_ops, .priv_auto_alloc_size = sizeof(struct zynq_clk_priv), .probe = zynq_clk_probe, |