Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754968Ab3GYAoo (ORCPT ); Wed, 24 Jul 2013 20:44:44 -0400 Received: from smtp.codeaurora.org ([198.145.11.231]:34936 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754729Ab3GYAnt (ORCPT ); Wed, 24 Jul 2013 20:43:49 -0400 From: Stephen Boyd To: Mike Turquette Cc: Saravana Kannan , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH v1 09/14] clk: msm: Add support for MSM8960's global clock controller (GCC) Date: Wed, 24 Jul 2013 17:43:37 -0700 Message-Id: <1374713022-6049-10-git-send-email-sboyd@codeaurora.org> X-Mailer: git-send-email 1.8.3.4.840.g6a90778 In-Reply-To: <1374713022-6049-1-git-send-email-sboyd@codeaurora.org> References: <1374713022-6049-1-git-send-email-sboyd@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8881 Lines: 320 Fill in the data and wire up the global clock controller to the MSM clock driver. This should allow most non-multimedia device drivers to control their clocks on 8960 based platforms. Cc: devicetree@vger.kernel.org Signed-off-by: Stephen Boyd --- .../devicetree/bindings/clock/qcom,gcc.txt | 55 +++++++ drivers/clk/msm/Kconfig | 10 ++ drivers/clk/msm/Makefile | 2 + drivers/clk/msm/core.c | 3 + drivers/clk/msm/gcc-8960.c | 174 +++++++++++++++++++++ drivers/clk/msm/internal.h | 2 + 6 files changed, 246 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/qcom,gcc.txt create mode 100644 drivers/clk/msm/gcc-8960.c diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc.txt b/Documentation/devicetree/bindings/clock/qcom,gcc.txt new file mode 100644 index 0000000..2311e1a --- /dev/null +++ b/Documentation/devicetree/bindings/clock/qcom,gcc.txt @@ -0,0 +1,55 @@ +MSM Global Clock Controller Binding +----------------------------------- + +Required properties : +- compatible : shall contain at least "qcom,gcc" and only one of the + following: + + "qcom,gcc-8660" + "qcom,gcc-8960" + +- reg : shall contain base register location and length +- clocks : shall contain clocks supplied by the clock controller + +Example: + clock-controller@900000 { + compatible = "qcom,gcc-8960", "qcom,gcc"; + reg = <0x900000 0x4000>; + + clocks { + pxo: pxo { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <27000000>; + }; + + pll8: pll8 { + #clock-cells = <0>; + compatible = "qcom,pll"; + clocks = <&pxo>; + }; + + vpll8: vpll8 { + #clock-cells = <0>; + compatible = "qcom,pll-vote"; + clocks = <&pll8>; + }; + + gsbi5_uart_rcg: gsbi5_uart_rcg { + #clock-cells = <0>; + compatible = "qcom,p2-mn16-clock"; + clocks = <&pxo>, <&vpll8>; + }; + + gsbi5_uart_clk: gsbi5_uart_cxc { + #clock-cells = <0>; + compatible = "qcom,cxc-clock"; + clocks = <&gsbi5_uart_rcg>; + }; + + gsbi5_uart_ahb: gsbi5_uart_ahb { + #clock-cells = <0>; + compatible = "qcom,cxc-hg-clock"; + }; + }; + }; diff --git a/drivers/clk/msm/Kconfig b/drivers/clk/msm/Kconfig index bf7e3d2..3eaffb6 100644 --- a/drivers/clk/msm/Kconfig +++ b/drivers/clk/msm/Kconfig @@ -2,3 +2,13 @@ menuconfig COMMON_CLK_MSM tristate "Support for Qualcomm's MSM designs" depends on OF +if COMMON_CLK_MSM + +config MSM_GCC_8960 + bool "MSM8960 Global Clock Controller" + help + Support for the global clock controller on msm8960 devices. + Say Y if you want to use peripheral devices such as UART, SPI, + i2c, USB, SD/eMMC, SATA, PCIe, etc. + +endif diff --git a/drivers/clk/msm/Makefile b/drivers/clk/msm/Makefile index 9cfd0d7..c785943 100644 --- a/drivers/clk/msm/Makefile +++ b/drivers/clk/msm/Makefile @@ -6,3 +6,5 @@ clk-msm-$(CONFIG_COMMON_CLK_MSM) += clk-rcg2.o clk-msm-$(CONFIG_COMMON_CLK_MSM) += clk-branch.o clk-msm-$(CONFIG_COMMON_CLK_MSM) += core.o + +clk-msm-$(CONFIG_MSM_GCC_8960) += gcc-8960.o diff --git a/drivers/clk/msm/core.c b/drivers/clk/msm/core.c index b1904c0..b8e702b 100644 --- a/drivers/clk/msm/core.c +++ b/drivers/clk/msm/core.c @@ -173,6 +173,9 @@ typedef struct clk * struct cc_data *cc); static const struct of_device_id msm_cc_match_table[] = { +#ifdef CONFIG_MSM_GCC_8960 + { .compatible = "qcom,gcc-8960", .data = &msm_gcc_8960_matches }, +#endif { } }; MODULE_DEVICE_TABLE(of, msm_cc_match_table); diff --git a/drivers/clk/msm/gcc-8960.c b/drivers/clk/msm/gcc-8960.c new file mode 100644 index 0000000..b57d2dd --- /dev/null +++ b/drivers/clk/msm/gcc-8960.c @@ -0,0 +1,174 @@ +/* + * Copyright (c) 2013, 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 + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include + +#include "internal.h" +#include "clk-pll.h" +#include "clk-rcg.h" +#include "clk-branch.h" + +static struct pll_desc pll8_desc = { + .l_reg = 0x3144, + .m_reg = 0x3148, + .n_reg = 0x314c, + .config_reg = 0x3154, + .mode_reg = 0x3140, + .status_reg = 0x3158, + .status_bit = 16, +}; + +static struct pll_vote_desc pll8_vote_desc = { + .vote_reg = 0x34c0, + .vote_bit = 8, +}; + +#define PXO 0 +#define PLL8 1 + +static u8 gcc_pxo_pll8_map[] = { + [PXO] = 0, + [PLL8] = 3, +}; + +static struct freq_tbl clk_tbl_gsbi_uart[] = { + { 1843200, PLL8, 2, 6, 625 }, + { 3686400, PLL8, 2, 12, 625 }, + { 7372800, PLL8, 2, 24, 625 }, + { 14745600, PLL8, 2, 48, 625 }, + { 16000000, PLL8, 4, 1, 6 }, + { 24000000, PLL8, 4, 1, 4 }, + { 32000000, PLL8, 4, 1, 3 }, + { 40000000, PLL8, 1, 5, 48 }, + { 46400000, PLL8, 1, 29, 240 }, + { 48000000, PLL8, 4, 1, 2 }, + { 51200000, PLL8, 1, 2, 15 }, + { 56000000, PLL8, 1, 7, 48 }, + { 58982400, PLL8, 1, 96, 625 }, + { 64000000, PLL8, 2, 1, 3 }, + { } +}; + +static struct rcg_desc gsbi5_uart_rcg = { + .ctl_reg = 0x2a54, + .ns_reg = 0x2a54, + .md_reg = 0x2a50, + .ctl_bit = 11, + .mnctr_en_bit = 8, + .mnctr_reset_bit = 7, + .mnctr_mode_shift = 5, + .pre_div_shift = 3, + .src_sel_shift = 0, + .n_val_shift = 16, + .m_val_shift = 16, + .parent_map = gcc_pxo_pll8_map, + .freq_tbl = clk_tbl_gsbi_uart, +}; + +static struct branch_desc gsbi5_uart_cxc = { + .ctl_reg = 0x2a54, + .halt_reg = 0x2fd0, + .ctl_bit = 9, + .halt_bit = 22, + .halt_check = BRANCH_HALT, +}; + +static struct rcg_desc gsbi6_uart_rcg = { + .ctl_reg = 0x2a74, + .ns_reg = 0x2a74, + .md_reg = 0x2a70, + .ctl_bit = 11, + .mnctr_en_bit = 8, + .mnctr_reset_bit = 7, + .mnctr_mode_shift = 5, + .pre_div_shift = 3, + .src_sel_shift = 0, + .n_val_shift = 16, + .m_val_shift = 16, + .parent_map = gcc_pxo_pll8_map, + .freq_tbl = clk_tbl_gsbi_uart, +}; + +static struct branch_desc gsbi6_uart_cxc = { + .ctl_reg = 0x2a74, + .halt_reg = 0x2fd0, + .ctl_bit = 9, + .halt_bit = 18, + .halt_check = BRANCH_HALT, +}; + +static struct branch_desc gsbi5_uart_ahb = { + .ctl_reg = 0x2a40, + .halt_reg = 0x2fd0, + .hwcg_reg = 0x2a40, + .ctl_bit = 4, + .hwcg_bit = 6, + .halt_bit = 23, + .halt_check = BRANCH_HALT, +}; + +static struct freq_tbl clk_tbl_gsbi_qup[] = { + { 1100000, PXO, 1, 2, 49 }, + { 5400000, PXO, 1, 1, 5 }, + { 10800000, PXO, 1, 2, 5 }, + { 15060000, PLL8, 1, 2, 51 }, + { 24000000, PLL8, 4, 1, 4 }, + { 25600000, PLL8, 1, 1, 15 }, + { 27000000, PXO, 1, 0, 0 }, + { 48000000, PLL8, 4, 1, 2 }, + { 51200000, PLL8, 1, 2, 15 }, + { } +}; + +static struct rcg_desc gsbi5_qup_rcg = { + .ctl_reg = 0x2a4c, + .ns_reg = 0x2a4c, + .md_reg = 0x2a48, + .ctl_bit = 11, + .mnctr_en_bit = 8, + .mnctr_reset_bit = 7, + .mnctr_mode_shift = 5, + .pre_div_shift = 3, + .src_sel_shift = 0, + .n_val_shift = 16, + .m_val_shift = 16, + .parent_map = gcc_pxo_pll8_map, + .freq_tbl = clk_tbl_gsbi_qup, +}; + +static struct branch_desc gsbi5_qup_cxc = { + .ctl_reg = 0x2a4c, + .halt_reg = 0x2fd0, + .ctl_bit = 9, + .halt_bit = 20, + .halt_check = BRANCH_HALT, +}; + +static struct of_clk_match msm_gcc_clk_match[] = { + { .name = "cxo" }, + { .name = "pxo" }, + { .name = "pll8", .driver_data = &pll8_desc }, + { .name = "vpll8", .driver_data = &pll8_vote_desc }, + { .name = "gsbi5_uart_rcg", .driver_data = &gsbi5_uart_rcg }, + { .name = "gsbi5_uart_cxc", .driver_data = &gsbi5_uart_cxc }, + { .name = "gsbi6_uart_rcg", .driver_data = &gsbi6_uart_rcg }, + { .name = "gsbi6_uart_cxc", .driver_data = &gsbi6_uart_cxc }, + { .name = "gsbi5_uart_ahb", .driver_data = &gsbi5_uart_ahb }, + { .name = "gsbi5_qup_rcg", .driver_data = &gsbi5_qup_rcg }, + { .name = "gsbi5_qup_cxc", .driver_data = &gsbi5_qup_cxc }, +}; + +const struct msm_clk_match msm_gcc_8960_matches = { + .matches = msm_gcc_clk_match, + .size = ARRAY_SIZE(msm_gcc_clk_match) +}; diff --git a/drivers/clk/msm/internal.h b/drivers/clk/msm/internal.h index 177bd3b..b0ffda7 100644 --- a/drivers/clk/msm/internal.h +++ b/drivers/clk/msm/internal.h @@ -21,4 +21,6 @@ struct msm_clk_match { size_t size; }; +extern const struct msm_clk_match msm_gcc_8960_matches; + #endif -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/