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authorArnaldo Carvalho de Melo <acme@redhat.com>2021-11-01 13:10:30 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-11-01 13:10:30 +0300
commit875eaa399042064c4ba08a56919f12ade8ea6cb9 (patch)
tree34c754e6174795aee4830e9363af47217ebbd475 /drivers/reset/reset-socfpga.c
parent10269a2ca2b08cbdda9232771e59ba901b87a074 (diff)
parent8bb7eca972ad531c9b149c0a51ab43a417385813 (diff)
downloadlinux-875eaa399042064c4ba08a56919f12ade8ea6cb9.tar.xz
Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up fixes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'drivers/reset/reset-socfpga.c')
-rw-r--r--drivers/reset/reset-socfpga.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c
index 2a72f861f798..8c6492e5693c 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -92,3 +92,29 @@ void __init socfpga_reset_init(void)
for_each_matching_node(np, socfpga_early_reset_dt_ids)
a10_reset_init(np);
}
+
+/*
+ * The early driver is problematic, because it doesn't register
+ * itself as a driver. This causes certain device links to prevent
+ * consumer devices from probing. The hacky solution is to register
+ * an empty driver, whose only job is to attach itself to the reset
+ * manager and call probe.
+ */
+static const struct of_device_id socfpga_reset_dt_ids[] = {
+ { .compatible = "altr,rst-mgr", },
+ { /* sentinel */ },
+};
+
+static int reset_simple_probe(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver reset_socfpga_driver = {
+ .probe = reset_simple_probe,
+ .driver = {
+ .name = "socfpga-reset",
+ .of_match_table = socfpga_reset_dt_ids,
+ },
+};
+builtin_platform_driver(reset_socfpga_driver);