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[2/2] soc: renesas: r8a774c0-sysc: Fix initialization order of 3DG-{A,B}

Message ID a64597227d0de5610407fcc95dc835745a53f5d0.1547115367.git.horms+renesas@verge.net.au (mailing list archive)
State Accepted
Commit a64597227d0de5610407fcc95dc835745a53f5d0
Delegated to: Simon Horman
Headers show
Series [GIT,PULL] Renesas ARM Based SoC Fixes for v5.0 | expand

Commit Message

Simon Horman Jan. 10, 2019, 10:18 a.m. UTC 
From: Biju Das <biju.das@bp.renesas.com>

The workaround for the wrong hierarchy of the 3DG-{A,B} power domains on
RZ/G2E ES1.0 corrected the parent domains. However, the 3DG-{A,B} power
domains were still initialized and powered in the wrong order, causing
3DG operation to fail.

Fix this by changing the order in the table at runtime, when running on
an affected SoC.

This work is based on the work done by Geert for R-Car E3.

Fixes: f37d211c687588328 ("soc: renesas: rcar-sysc: Add r8a774c0 support")

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/soc/renesas/r8a774c0-sysc.c | 23 ++++-------------------
 1 file changed, 4 insertions(+), 19 deletions(-)
diff mbox series

Patch

diff --git a/drivers/soc/renesas/r8a774c0-sysc.c b/drivers/soc/renesas/r8a774c0-sysc.c
index e1ac4c0f6640..11050e17ea81 100644
--- a/drivers/soc/renesas/r8a774c0-sysc.c
+++ b/drivers/soc/renesas/r8a774c0-sysc.c
@@ -28,19 +28,6 @@  static struct rcar_sysc_area r8a774c0_areas[] __initdata = {
 	{ "3dg-b",	0x100, 1, R8A774C0_PD_3DG_B,	R8A774C0_PD_3DG_A },
 };
 
-static void __init rcar_sysc_fix_parent(struct rcar_sysc_area *areas,
-					unsigned int num_areas, u8 id,
-					int new_parent)
-{
-	unsigned int i;
-
-	for (i = 0; i < num_areas; i++)
-		if (areas[i].isr_bit == id) {
-			areas[i].parent = new_parent;
-			return;
-		}
-}
-
 /* Fixups for RZ/G2E ES1.0 revision */
 static const struct soc_device_attribute r8a774c0[] __initconst = {
 	{ .soc_id = "r8a774c0", .revision = "ES1.0" },
@@ -50,12 +37,10 @@  static const struct soc_device_attribute r8a774c0[] __initconst = {
 static int __init r8a774c0_sysc_init(void)
 {
 	if (soc_device_match(r8a774c0)) {
-		rcar_sysc_fix_parent(r8a774c0_areas,
-				     ARRAY_SIZE(r8a774c0_areas),
-				     R8A774C0_PD_3DG_A, R8A774C0_PD_3DG_B);
-		rcar_sysc_fix_parent(r8a774c0_areas,
-				     ARRAY_SIZE(r8a774c0_areas),
-				     R8A774C0_PD_3DG_B, R8A774C0_PD_ALWAYS_ON);
+		/* Fix incorrect 3DG hierarchy */
+		swap(r8a774c0_areas[6], r8a774c0_areas[7]);
+		r8a774c0_areas[6].parent = R8A774C0_PD_ALWAYS_ON;
+		r8a774c0_areas[7].parent = R8A774C0_PD_3DG_B;
 	}
 
 	return 0;