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// SPDX-License-Identifier: GPL-2.0
/*
* Stub clk driver for non-essential clocks.
*
* This driver should be used for clock controllers
* which are described as dependencies in DT but aren't
* actually necessary for hardware functionality.
*/
#include <clk-uclass.h>
#include <dm.h>
/* NOP parent nodes to stub clocks */
static const struct udevice_id nop_parent_ids[] = {
{ .compatible = "qcom,rpm-proc" },
{ .compatible = "qcom,glink-rpm" },
{ .compatible = "qcom,glink-smd-rpm" },
{ }
};
U_BOOT_DRIVER(nop_parent) = {
.name = "nop_parent",
.id = UCLASS_NOP,
.of_match = nop_parent_ids,
.bind = dm_scan_fdt_dev,
.flags = DM_FLAG_DEFAULT_PD_CTRL_OFF,
};
static ulong stub_clk_set_rate(struct clk *clk, ulong rate)
{
return (clk->rate = rate);
}
static ulong stub_clk_get_rate(struct clk *clk)
{
return clk->rate;
}
static int stub_clk_nop(struct clk *clk)
{
return 0;
}
static struct clk_ops stub_clk_ops = {
.set_rate = stub_clk_set_rate,
.get_rate = stub_clk_get_rate,
.enable = stub_clk_nop,
.disable = stub_clk_nop,
};
static const struct udevice_id stub_clk_ids[] = {
{ .compatible = "qcom,rpmcc" },
{ .compatible = "qcom,sdm845-rpmh-clk" },
{ .compatible = "qcom,sc7280-rpmh-clk" },
{ .compatible = "qcom,sm8150-rpmh-clk" },
{ .compatible = "qcom,sm8250-rpmh-clk" },
{ .compatible = "qcom,sm8550-rpmh-clk" },
{ .compatible = "qcom,sm8650-rpmh-clk" },
{ }
};
U_BOOT_DRIVER(clk_stub) = {
.name = "clk_stub",
.id = UCLASS_CLK,
.ops = &stub_clk_ops,
.of_match = stub_clk_ids,
.flags = DM_FLAG_DEFAULT_PD_CTRL_OFF,
};
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