Re: [PATCH 1/5] PM / AVS: rockchip-io: make io-domains a child of the GRF
From: Kevin Hilman <khilman@baylibre.com>
Date: 2016-02-05 22:47:08
Also in:
linux-arm-kernel, linux-rockchip
Heiko Stuebner [off-list ref] writes:
IO-domain handling is part of the general register files, so should live under the grf directly. This change allows the grf to be a simple-mfd and the io-domains fetching the syscon regmap from that parent-node. The old binding is of course preserved, though deprecated. Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Kevin Hilman <khilman@baylibre.com>
quoted hunk
--- Documentation/devicetree/bindings/power/rockchip-io-domain.txt | 4 +++- drivers/power/avs/rockchip-io-domain.c | 10 +++++++++- 2 files changed, 12 insertions(+), 2 deletions(-)diff --git a/Documentation/devicetree/bindings/power/rockchip-io-domain.txt b/Documentation/devicetree/bindings/power/rockchip-io-domain.txt index b8627e7..7ed5518 100644 --- a/Documentation/devicetree/bindings/power/rockchip-io-domain.txt +++ b/Documentation/devicetree/bindings/power/rockchip-io-domain.txt@@ -35,8 +35,10 @@ Required properties: - "rockchip,rk3288-io-voltage-domain" for rk3288 - "rockchip,rk3368-io-voltage-domain" for rk3368 - "rockchip,rk3368-pmu-io-voltage-domain" for rk3368 pmu-domains -- rockchip,grf: phandle to the syscon managing the "general register files" +Deprecated properties: +- rockchip,grf: phandle to the syscon managing the "general register files" + Systems should move the io-domains to a sub-node of the grf simple-mfd. You specify supplies using the standard regulator bindings by including a phandle the relevant regulator. All specified supplies must be ablediff --git a/drivers/power/avs/rockchip-io-domain.c b/drivers/power/avs/rockchip-io-domain.c index 8099456..a5a07d8 100644 --- a/drivers/power/avs/rockchip-io-domain.c +++ b/drivers/power/avs/rockchip-io-domain.c@@ -278,6 +278,7 @@ static int rockchip_iodomain_probe(struct platform_device *pdev) struct device_node *np = pdev->dev.of_node; const struct of_device_id *match; struct rockchip_iodomain *iod; + struct device *parent; int i, ret = 0; if (!np)@@ -293,7 +294,14 @@ static int rockchip_iodomain_probe(struct platform_device *pdev) match = of_match_node(rockchip_iodomain_match, np); iod->soc_data = (struct rockchip_iodomain_soc_data *)match->data; - iod->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); + parent = pdev->dev.parent; + if (parent && parent->of_node) { + iod->grf = syscon_node_to_regmap(parent->of_node); + } else { + dev_dbg(&pdev->dev, "falling back to old binding\n"); + iod->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); + } + if (IS_ERR(iod->grf)) { dev_err(&pdev->dev, "couldn't find grf regmap\n"); return PTR_ERR(iod->grf);