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Date: Fri, 4 Apr 2014 11:31:29 -0500
From: Kumar Gala <galak@...eaurora.org>
To: Mike Turquette <mturquette@...aro.org>
Cc: Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
sboyd@...eaurora.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org
Subject: [PATCH] clk: qcom: Add basic support for APQ8064 global clock controller clocks
The APQ8064 and MSM8960 share a significant amount of clock data and
code between the two SoCs. Rather than duplicating the data we just add
support for a unqiue APQ8064 clock table into the MSM8960 code.
For now add just enough clocks to get a basic serial port going on an
APQ8064 device.
Signed-off-by: Kumar Gala <galak@...eaurora.org>
---
This patch is based on Stephen's qcom common clk init conslidation patch
.../devicetree/bindings/clock/qcom,gcc.txt | 1 +
drivers/clk/qcom/Kconfig | 4 +--
drivers/clk/qcom/gcc-msm8960.c | 30 +++++++++++++++++++---
3 files changed, 30 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc.txt b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
index 74974d6..25ae79c 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc.txt
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
@@ -4,6 +4,7 @@ Qualcomm Global Clock & Reset Controller Binding
Required properties :
- compatible : shall contain only one of the following:
+ "qcom,gcc-apq8064"
"qcom,gcc-ipq8064"
"qcom,gcc-msm8660"
"qcom,gcc-msm8960"
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 5d81f7d..4b1f2d7 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -21,10 +21,10 @@ config MSM_GCC_8660
i2c, USB, SD/eMMC, etc.
config MSM_GCC_8960
- tristate "MSM8960 Global Clock Controller"
+ tristate "APQ8064/MSM8960 Global Clock Controller"
depends on COMMON_CLK_QCOM
help
- Support for the global clock controller on msm8960 devices.
+ Support for the global clock controller on apq8064/msm8960 devices.
Say Y if you want to use peripheral devices such as UART, SPI,
i2c, USB, SD/eMMC, SATA, PCIe, etc.
diff --git a/drivers/clk/qcom/gcc-msm8960.c b/drivers/clk/qcom/gcc-msm8960.c
index 633b019..8e2b6dd 100644
--- a/drivers/clk/qcom/gcc-msm8960.c
+++ b/drivers/clk/qcom/gcc-msm8960.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -2868,6 +2868,16 @@ static const struct qcom_reset_map gcc_msm8960_resets[] = {
[RIVA_RESET] = { 0x35e0 },
};
+static struct clk_regmap *gcc_apq8064_clks[] = {
+ [PLL8] = &pll8.clkr,
+ [PLL8_VOTE] = &pll8_vote,
+ [GSBI7_UART_SRC] = &gsbi7_uart_src.clkr,
+ [GSBI7_UART_CLK] = &gsbi7_uart_clk.clkr,
+ [GSBI7_QUP_SRC] = &gsbi7_qup_src.clkr,
+ [GSBI7_QUP_CLK] = &gsbi7_qup_clk.clkr,
+ [GSBI7_H_CLK] = &gsbi7_h_clk.clkr,
+};
+
static const struct regmap_config gcc_msm8960_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
@@ -2884,8 +2894,17 @@ static const struct qcom_cc_desc gcc_msm8960_desc = {
.num_resets = ARRAY_SIZE(gcc_msm8960_resets),
};
+static const struct qcom_cc_desc gcc_apq8064_desc = {
+ .config = &gcc_msm8960_regmap_config,
+ .clks = gcc_apq8064_clks,
+ .num_clks = ARRAY_SIZE(gcc_apq8064_clks),
+ .resets = gcc_msm8960_resets,
+ .num_resets = ARRAY_SIZE(gcc_msm8960_resets),
+};
+
static const struct of_device_id gcc_msm8960_match_table[] = {
- { .compatible = "qcom,gcc-msm8960" },
+ { .compatible = "qcom,gcc-msm8960", .data = &gcc_msm8960_desc },
+ { .compatible = "qcom,gcc-apq8064", .data = &gcc_apq8064_desc },
{ }
};
MODULE_DEVICE_TABLE(of, gcc_msm8960_match_table);
@@ -2894,6 +2913,11 @@ static int gcc_msm8960_probe(struct platform_device *pdev)
{
struct clk *clk;
struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+
+ match = of_match_device(gcc_msm8960_match_table, &pdev->dev);
+ if (!match)
+ return -EINVAL;
/* Temporary until RPM clocks supported */
clk = clk_register_fixed_rate(dev, "cxo", NULL, CLK_IS_ROOT, 19200000);
@@ -2904,7 +2928,7 @@ static int gcc_msm8960_probe(struct platform_device *pdev)
if (IS_ERR(clk))
return PTR_ERR(clk);
- return qcom_cc_probe(pdev, &gcc_msm8960_desc);
+ return qcom_cc_probe(pdev, match->data);
}
static int gcc_msm8960_remove(struct platform_device *pdev)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
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