diff options
| author | Konstantin Porotchkin <kostap@marvell.com> | 2017-03-30 17:22:53 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-04-24 21:42:12 +0200 |
| commit | a8309cedcdce94fc6e36d49d0bf8e75d5813ebc6 (patch) | |
| tree | e2c28e4c694c2aa332dc58a9de812dc465323348 | |
| parent | 25fc846503738c3d4ca886cfee4b4ff4415d0cec (diff) | |
clk: apn806: Add eMMC clock to system controller driver
Add fixed clock of 400MHz to system controller driver. This clock is
used as SD/eMMC clock source.
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Reviewed-by: Omri Itach <omrii@marvell.com>
Reviewed-by: Hanna Hawa <hannah@marvell.com>
[fixed up conflicts, added error handling --rmk]
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | arch/arm64/boot/dts/marvell/armada-ap806.dtsi | 3 | ||||
| -rw-r--r-- | drivers/clk/mvebu/ap806-system-controller.c | 15 |
2 files changed, 16 insertions, 2 deletions
diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi index a749ba2edec4..5019c8f4acd0 100644 --- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi +++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi @@ -235,7 +235,8 @@ #clock-cells = <1>; clock-output-names = "ap-cpu-cluster-0", "ap-cpu-cluster-1", - "ap-fixed", "ap-mss"; + "ap-fixed", "ap-mss", + "ap-emmc"; reg = <0x6f4000 0x1000>; }; }; diff --git a/drivers/clk/mvebu/ap806-system-controller.c b/drivers/clk/mvebu/ap806-system-controller.c index f17702107ac5..901d89c4ab4a 100644 --- a/drivers/clk/mvebu/ap806-system-controller.c +++ b/drivers/clk/mvebu/ap806-system-controller.c @@ -23,7 +23,7 @@ #define AP806_SAR_REG 0x400 #define AP806_SAR_CLKFREQ_MODE_MASK 0x1f -#define AP806_CLK_NUM 4 +#define AP806_CLK_NUM 5 static struct clk *ap806_clks[AP806_CLK_NUM]; @@ -135,6 +135,17 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev) goto fail3; } + /* eMMC Clock is fixed clock divided by 3 */ + of_property_read_string_index(np, "clock-output-names", + 4, &name); + ap806_clks[4] = clk_register_fixed_factor(NULL, name, fixedclk_name, + 0, 1, 3); + if (IS_ERR(ap806_clks[4])) { + ret = PTR_ERR(ap806_clks[4]); + goto fail4; + } + + of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data); ret = of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data); if (ret) goto fail_clk_add; @@ -142,6 +153,8 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev) return 0; fail_clk_add: + clk_unregister_fixed_factor(ap806_clks[4]); +fail4: clk_unregister_fixed_factor(ap806_clks[3]); fail3: clk_unregister_fixed_rate(ap806_clks[2]); |