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authorGeert Uytterhoeven <geert+renesas@glider.be>2017-03-31 11:01:56 +0200
committerSimon Horman <horms+renesas@verge.net.au>2017-04-07 13:53:41 -0400
commitfcb87087261e1be51b4c03677f39246bdc312b1c (patch)
treec7ceed2cd8c5e05d14684bb2ee687467c87af279 /drivers/soc/renesas
parentafa6f53df6052968ce3934ad324777c0057e31d1 (diff)
downloadlinux-fcb87087261e1be51b4c03677f39246bdc312b1c.tar.bz2
soc: renesas: rcar-sysc: Add support for R-Car H3 ES2.0
Power area A2VC0 was removed in revision ES2.0, cfr. R-Car Gen3 Hardware User's Manual rev. 0.53E. Hence remove it from the power area table when not running on ES1.x. This is in line with the goal to: 1. Support both the ES1.x and ES2.0 SoC revisions in a single binary for now, 2. Make it clear which code supports ES1.x, so it can easily be identified and removed later, when production SoCs are deemed ubiquitous. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'drivers/soc/renesas')
-rw-r--r--drivers/soc/renesas/r8a7795-sysc.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/soc/renesas/r8a7795-sysc.c b/drivers/soc/renesas/r8a7795-sysc.c
index 5e7537c96f7b..7412666187b3 100644
--- a/drivers/soc/renesas/r8a7795-sysc.c
+++ b/drivers/soc/renesas/r8a7795-sysc.c
@@ -1,7 +1,7 @@
/*
* Renesas R-Car H3 System Controller
*
- * Copyright (C) 2016 Glider bvba
+ * Copyright (C) 2016-2017 Glider bvba
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -10,12 +10,13 @@
#include <linux/bug.h>
#include <linux/kernel.h>
+#include <linux/sys_soc.h>
#include <dt-bindings/power/r8a7795-sysc.h>
#include "rcar-sysc.h"
-static const struct rcar_sysc_area r8a7795_areas[] __initconst = {
+static struct rcar_sysc_area r8a7795_areas[] __initdata = {
{ "always-on", 0, 0, R8A7795_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
{ "ca57-scu", 0x1c0, 0, R8A7795_PD_CA57_SCU, R8A7795_PD_ALWAYS_ON,
PD_SCU },
@@ -40,6 +41,7 @@ static const struct rcar_sysc_area r8a7795_areas[] __initconst = {
{ "a3vp", 0x340, 0, R8A7795_PD_A3VP, R8A7795_PD_ALWAYS_ON },
{ "cr7", 0x240, 0, R8A7795_PD_CR7, R8A7795_PD_ALWAYS_ON },
{ "a3vc", 0x380, 0, R8A7795_PD_A3VC, R8A7795_PD_ALWAYS_ON },
+ /* A2VC0 exists on ES1.x only */
{ "a2vc0", 0x3c0, 0, R8A7795_PD_A2VC0, R8A7795_PD_A3VC },
{ "a2vc1", 0x3c0, 1, R8A7795_PD_A2VC1, R8A7795_PD_A3VC },
{ "3dg-a", 0x100, 0, R8A7795_PD_3DG_A, R8A7795_PD_ALWAYS_ON },
@@ -50,7 +52,27 @@ static const struct rcar_sysc_area r8a7795_areas[] __initconst = {
{ "a3ir", 0x180, 0, R8A7795_PD_A3IR, R8A7795_PD_ALWAYS_ON },
};
+
+ /*
+ * Fixups for R-Car H3 revisions after ES1.x
+ */
+
+static const struct soc_device_attribute r8a7795es1[] __initconst = {
+ { .soc_id = "r8a7795", .revision = "ES1.*" },
+ { /* sentinel */ }
+};
+
+static int __init r8a7795_sysc_init(void)
+{
+ if (!soc_device_match(r8a7795es1))
+ rcar_sysc_nullify(r8a7795_areas, ARRAY_SIZE(r8a7795_areas),
+ R8A7795_PD_A2VC0);
+
+ return 0;
+}
+
const struct rcar_sysc_info r8a7795_sysc_info __initconst = {
+ .init = r8a7795_sysc_init,
.areas = r8a7795_areas,
.num_areas = ARRAY_SIZE(r8a7795_areas),
};