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clk: spacemit: k1: spawn reset device from per-syscon clock drivers

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The K1 reset driver in drivers/reset/spacemit/ binds by name (no DT
of_match), so the per-syscon clock drivers must spawn it.

Add a .bind hook to k1_mpmu_clk, k1_apbc_clk and k1_apmu_clk that
calls spacemit_k1_reset_bind() to instantiate a UCLASS_RESET sibling
on the same ofnode.

Also introduce k1_apbc2_clk here. Its kernel DT node has #reset-cells
but no #clock-cells, so the driver exists only as the binding hook
for the apbc2 reset spawn.

With this in place, references such as
  resets = <&syscon_apbc RESET_TWSI0>;
in the kernel-mainline DT resolve correctly.

Signed-off-by: Guodong Xu <guodong@riscstar.com>
This commit is contained in:
Guodong Xu
2026-07-21 16:31:10 +08:00
committed by Tim Ouyang
parent daa9b916a6
commit 5b3959e2d6
1 changed files with 37 additions and 0 deletions
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drivers/clk/spacemit/clk-k1.c
+37
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@@ -13,6 +13,7 @@
#include <dm/lists.h>
#include <regmap.h>
#include <linux/clk-provider.h>
#include <soc/spacemit/k1-reset.h>
#include <soc/spacemit/k1-syscon.h>
#include "clk_common.h"
@@ -1661,6 +1662,26 @@ U_BOOT_DRIVER(k1_pll_clk) = {
.flags = DM_FLAG_PRE_RELOC,
};
static int k1_mpmu_clk_bind(struct udevice *dev)
{
return spacemit_k1_reset_bind(dev, SPACEMIT_K1_RESET_MPMU);
}
static int k1_apbc_clk_bind(struct udevice *dev)
{
return spacemit_k1_reset_bind(dev, SPACEMIT_K1_RESET_APBC);
}
static int k1_apmu_clk_bind(struct udevice *dev)
{
return spacemit_k1_reset_bind(dev, SPACEMIT_K1_RESET_APMU);
}
static int k1_apbc2_clk_bind(struct udevice *dev)
{
return spacemit_k1_reset_bind(dev, SPACEMIT_K1_RESET_APBC2);
}
static const struct udevice_id k1_mpmu_clk_match[] = {
{ .compatible = "spacemit,k1-syscon-mpmu",
.data = (ulong)&k1_ccu_mpmu_data },
@@ -1673,6 +1694,7 @@ U_BOOT_DRIVER(k1_mpmu_clk) = {
.name = "k1_mpmu_clk",
.id = UCLASS_CLK,
.of_match = k1_mpmu_clk_match,
.bind = k1_mpmu_clk_bind,
.probe = k1_mpmu_clk_probe,
.ops = &k1_mpmu_clk_ops,
.flags = DM_FLAG_PRE_RELOC,
@@ -1690,6 +1712,7 @@ U_BOOT_DRIVER(k1_apbc_clk) = {
.name = "k1_apbc_clk",
.id = UCLASS_CLK,
.of_match = k1_apbc_clk_match,
.bind = k1_apbc_clk_bind,
.probe = k1_apbc_clk_probe,
.ops = &k1_apbc_clk_ops,
.flags = DM_FLAG_PRE_RELOC,
@@ -1707,7 +1730,21 @@ U_BOOT_DRIVER(k1_apmu_clk) = {
.name = "k1_apmu_clk",
.id = UCLASS_CLK,
.of_match = k1_apmu_clk_match,
.bind = k1_apmu_clk_bind,
.probe = k1_apmu_clk_probe,
.ops = &k1_apmu_clk_ops,
.flags = DM_FLAG_PRE_RELOC,
};
static const struct udevice_id k1_apbc2_clk_match[] = {
{ .compatible = "spacemit,k1-syscon-apbc2" },
{ /* sentinel */ },
};
U_BOOT_DRIVER(k1_apbc2_clk) = {
.name = "k1_apbc2_clk",
.id = UCLASS_CLK,
.of_match = k1_apbc2_clk_match,
.bind = k1_apbc2_clk_bind,
.flags = DM_FLAG_PRE_RELOC,
};