linux-kernel - [PATCH v2] clk: qcom: Add EBI2 clocks for IPQ806x

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Message-Id: <1427953841-4147-1-git-send-email-architt@codeaurora.org>
Date:	Thu,  2 Apr 2015 11:20:41 +0530
From:	Archit Taneja <architt@...eaurora.org>
To:	sboyd@...eaurora.org
Cc:	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Archit Taneja <architt@...eaurora.org>
Subject: [PATCH v2] clk: qcom: Add EBI2 clocks for IPQ806x

The NAND controller within EBI2 requires EBI2_CLK and EBI2_ALWAYS_ON_CLK clocks.
Create structs for these clocks so that they can be used by the NAND controller
driver. Add an entry for EBI2_AON_CLK in the gcc-ipq806x DT binding document.

Signed-off-by: Archit Taneja <architt@...eaurora.org>
---
v2:
- removed hwcg_reg/bit entires in ebi2_aon_clk as they only apply to ebi2_clk.
- This was originally a part of the qcom nand controller series. Separating
  it out so that it's already there before qcom nand is merged.

 drivers/clk/qcom/gcc-ipq806x.c               | 32 ++++++++++++++++++++++++++++
 include/dt-bindings/clock/qcom,gcc-ipq806x.h |  1 +
 2 files changed, 33 insertions(+)

diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
index cbdc31d..f7e2d07 100644
--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -2170,6 +2170,36 @@ static struct clk_branch usb_fs1_h_clk = {
 	},
 };
 
+static struct clk_branch ebi2_clk = {
+	.hwcg_reg = 0x3b00,
+	.hwcg_bit = 6,
+	.halt_reg = 0x2fcc,
+	.halt_bit = 1,
+	.clkr = {
+		.enable_reg = 0x3b00,
+		.enable_mask = BIT(4),
+		.hw.init = &(struct clk_init_data){
+			.name = "ebi2_clk",
+			.ops = &clk_branch_ops,
+			.flags = CLK_IS_ROOT,
+		},
+	},
+};
+
+static struct clk_branch ebi2_aon_clk = {
+	.halt_reg = 0x2fcc,
+	.halt_bit = 0,
+	.clkr = {
+		.enable_reg = 0x3b00,
+		.enable_mask = BIT(8),
+		.hw.init = &(struct clk_init_data){
+			.name = "ebi2_always_on_clk",
+			.ops = &clk_branch_ops,
+			.flags = CLK_IS_ROOT,
+		},
+	},
+};
+
 static struct clk_regmap *gcc_ipq806x_clks[] = {
 	[PLL0] = &pll0.clkr,
 	[PLL0_VOTE] = &pll0_vote,
@@ -2273,6 +2303,8 @@ static struct clk_regmap *gcc_ipq806x_clks[] = {
 	[USB_FS1_XCVR_SRC] = &usb_fs1_xcvr_clk_src.clkr,
 	[USB_FS1_XCVR_CLK] = &usb_fs1_xcvr_clk.clkr,
 	[USB_FS1_SYSTEM_CLK] = &usb_fs1_sys_clk.clkr,
+	[EBI2_CLK] = &ebi2_clk.clkr,
+	[EBI2_AON_CLK] = &ebi2_aon_clk.clkr,
 };
 
 static const struct qcom_reset_map gcc_ipq806x_resets[] = {
diff --git a/include/dt-bindings/clock/qcom,gcc-ipq806x.h b/include/dt-bindings/clock/qcom,gcc-ipq806x.h
index 04fb29a..ebd63fd 100644
--- a/include/dt-bindings/clock/qcom,gcc-ipq806x.h
+++ b/include/dt-bindings/clock/qcom,gcc-ipq806x.h
@@ -288,5 +288,6 @@
 #define UBI32_CORE2_CLK_SRC			278
 #define UBI32_CORE1_CLK				279
 #define UBI32_CORE2_CLK				280
+#define EBI2_AON_CLK				281
 
 #endif
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

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