From: Aisheng Dong <aisheng.dong@nxp.com>
To: "linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>
Cc: Aisheng Dong <aisheng.dong@nxp.com>,
"sboyd@kernel.org" <sboyd@kernel.org>,
"mturquette@baylibre.com" <mturquette@baylibre.com>,
dl-linux-imx <linux-imx@nxp.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
Fabio Estevam <fabio.estevam@nxp.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH 3/4] clk: imx: imx8qxp: add parsing clocks from device tree
Date: Thu, 21 Feb 2019 18:03:51 +0000 [thread overview]
Message-ID: <1550771836-10014-4-git-send-email-aisheng.dong@nxp.com> (raw)
In-Reply-To: <1550771836-10014-1-git-send-email-aisheng.dong@nxp.com>
add parsing clocks from device tree
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
drivers/clk/imx/clk-imx8qxp.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/drivers/clk/imx/clk-imx8qxp.c b/drivers/clk/imx/clk-imx8qxp.c
index 83e2ef9..7c5f8c6 100644
--- a/drivers/clk/imx/clk-imx8qxp.c
+++ b/drivers/clk/imx/clk-imx8qxp.c
@@ -17,17 +17,60 @@
#include <dt-bindings/clock/imx8-clock.h>
#include <dt-bindings/firmware/imx/rsrc.h>
+static int imx_scu_parse_clks_from_dt(struct device *dev,
+ const struct device_node *np)
+{
+ struct clk_hw *hw;
+ const char *name;
+ int clk_type;
+ int rsrc_id;
+ int ret;
+
+ ret = of_property_read_u32(np, "rsrc-id", &rsrc_id);
+ if (ret) {
+ dev_err(dev, "failed to parse rsrc-id\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_u32(np, "clk-type", &clk_type);
+ if (ret) {
+ dev_err(dev, "failed to parse clk-type\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_string(np, "clock-output-names", &name);
+ if (ret) {
+ dev_err(dev, "failed to parse clock-output-names\n");
+ return -EINVAL;
+ }
+
+ hw = imx_clk_scu(name, rsrc_id, clk_type);
+ if (IS_ERR(hw)) {
+ dev_err(dev, "failed to register clock\n");
+ return -EINVAL;
+ }
+
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, hw);
+}
+
static int imx8qxp_clk_probe(struct platform_device *pdev)
{
struct device_node *ccm_node = pdev->dev.of_node;
struct clk_hw_onecell_data *clk_data;
struct clk_hw **clks;
+ u32 clock_cells;
int ret, i;
ret = imx_clk_scu_init();
if (ret)
return ret;
+ /* try new binding to parse clocks from device tree first */
+ of_property_read_u32(ccm_node, "#clock-cells", &clock_cells);
+
+ if (clock_cells == 0)
+ return imx_scu_parse_clks_from_dt(&pdev->dev, ccm_node);
+
clk_data = devm_kzalloc(&pdev->dev, struct_size(clk_data, hws,
IMX_SCU_CLK_END), GFP_KERNEL);
if (!clk_data)
--
2.7.4
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next prev parent reply other threads:[~2019-02-21 18:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-21 18:03 [PATCH 0/4] clk: imx: scu: add parsing clocks from device tree support Aisheng Dong
2019-02-21 18:03 ` [PATCH 1/4] dt-bindings: firmware: imx-scu: new binding to parse clocks from device tree Aisheng Dong
2019-03-26 13:47 ` Rob Herring
2019-03-27 14:35 ` Aisheng Dong
2019-04-02 14:47 ` Aisheng Dong
2019-04-09 14:04 ` Aisheng Dong
2019-04-10 15:32 ` Rob Herring
2019-04-10 17:35 ` [EXT] " Aisheng Dong
2019-02-21 18:03 ` [PATCH 2/4] dt-bindings: clock: imx-lpcg: add support " Aisheng Dong
2019-02-25 19:46 ` Stephen Boyd
2019-02-26 10:07 ` Aisheng Dong
2019-03-18 15:10 ` Aisheng Dong
2019-04-02 14:55 ` Aisheng Dong
2019-02-21 18:03 ` Aisheng Dong [this message]
2019-02-21 18:03 ` [PATCH 4/4] clk: imx: imx8qxp-lpcg: add parsing " Aisheng Dong
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