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Message-ID: <01d03f4b-699d-934d-60ff-4c95e07063fd@quicinc.com>
Date: Tue, 18 Jul 2023 14:43:43 +0530
From: Devi Priya <quic_devipriy@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
<agross@...nel.org>, <andersson@...nel.org>,
<konrad.dybcio@...aro.org>, <mturquette@...libre.com>,
<sboyd@...nel.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<catalin.marinas@....com>, <will@...nel.org>,
<p.zabel@...gutronix.de>, <richardcochran@...il.com>,
<arnd@...db.de>, <geert+renesas@...der.be>,
<neil.armstrong@...aro.org>, <nfraprado@...labora.com>,
<rafal@...ecki.pl>, <linux-arm-msm@...r.kernel.org>,
<linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>
CC: <quic_saahtoma@...cinc.com>
Subject: Re: [PATCH 4/6] clk: qcom: Add NSS clock Controller driver for
IPQ9574
On 7/11/2023 4:20 PM, Dmitry Baryshkov wrote:
> On 11/07/2023 12:35, Devi Priya wrote:
>> Add Networking Sub System Clock Controller(NSSCC) driver for ipq9574
>> based
>> devices.
>>
>> Signed-off-by: Devi Priya <quic_devipriy@...cinc.com>
>> ---
>> drivers/clk/qcom/Kconfig | 6 +
>> drivers/clk/qcom/Makefile | 1 +
>> drivers/clk/qcom/nsscc-ipq9574.c | 3080 ++++++++++++++++++++++++++++++
>> 3 files changed, 3087 insertions(+)
>> create mode 100644 drivers/clk/qcom/nsscc-ipq9574.c
>>
>> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
>> index 263e55d75e3f..5556063d204f 100644
>> --- a/drivers/clk/qcom/Kconfig
>> +++ b/drivers/clk/qcom/Kconfig
>> @@ -195,6 +195,12 @@ config IPQ_GCC_9574
>> i2c, USB, SD/eMMC, etc. Select this for the root clock
>> of ipq9574.
>> +config IPQ_NSSCC_9574
>> + tristate "IPQ9574 NSS Clock Controller"
>> + depends on IPQ_GCC_9574
>> + help
>> + Support for NSS clock controller on ipq9574 devices.
>> +
>> config MSM_GCC_8660
>> tristate "MSM8660 Global Clock Controller"
>> depends on ARM || COMPILE_TEST
>> diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
>> index e6e294274c35..8ba882186bff 100644
>> --- a/drivers/clk/qcom/Makefile
>> +++ b/drivers/clk/qcom/Makefile
>> @@ -29,6 +29,7 @@ obj-$(CONFIG_IPQ_GCC_6018) += gcc-ipq6018.o
>> obj-$(CONFIG_IPQ_GCC_806X) += gcc-ipq806x.o
>> obj-$(CONFIG_IPQ_GCC_8074) += gcc-ipq8074.o
>> obj-$(CONFIG_IPQ_GCC_9574) += gcc-ipq9574.o
>> +obj-$(CONFIG_IPQ_NSSCC_9574) += nsscc-ipq9574.o
>> obj-$(CONFIG_IPQ_LCC_806X) += lcc-ipq806x.o
>> obj-$(CONFIG_MDM_GCC_9607) += gcc-mdm9607.o
>> obj-$(CONFIG_MDM_GCC_9615) += gcc-mdm9615.o
>> diff --git a/drivers/clk/qcom/nsscc-ipq9574.c
>> b/drivers/clk/qcom/nsscc-ipq9574.c
>> new file mode 100644
>> index 000000000000..b6bed0d24059
>> --- /dev/null
>> +++ b/drivers/clk/qcom/nsscc-ipq9574.c
>> @@ -0,0 +1,3080 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +/*
>> + * Copyright (c) 2021, The Linux Foundation. All rights reserved.
>> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights
>> reserved.
>> + */
>> +
>> +#include <linux/clk-provider.h>
>> +#include <linux/err.h>
>> +#include <linux/kernel.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +#include <linux/of_device.h>
>> +#include <linux/regmap.h>
>> +
>> +#include <dt-bindings/clock/qcom,ipq9574-nsscc.h>
>> +#include <dt-bindings/reset/qcom,ipq9574-nsscc.h>
>> +
>> +#include "clk-alpha-pll.h"
>> +#include "clk-branch.h"
>> +#include "clk-pll.h"
>> +#include "clk-rcg.h"
>> +#include "clk-regmap.h"
>> +#include "clk-regmap-divider.h"
>> +#include "clk-regmap-mux.h"
>> +#include "common.h"
>> +#include "reset.h"
>> +
>> +/* Need to match the order of clocks in DT binding */
>> +enum {
>> + DT_BIAS_PLL_CC_CLK,
>> + DT_BIAS_PLL_NSS_NOC_CLK,
>> + DT_BIAS_PLL_UBI_NC_CLK,
>> + DT_GCC_GPLL0_OUT_AUX,
>> + DT_UNIPHY0_GCC_RX_CLK,
>> + DT_UNIPHY0_GCC_TX_CLK,
>> + DT_UNIPHY1_GCC_RX_CLK,
>> + DT_UNIPHY1_GCC_TX_CLK,
>> + DT_UNIPHY2_GCC_RX_CLK,
>> + DT_UNIPHY2_GCC_TX_CLK,
>> + DT_XO,
>> +};
>> +
>> +enum {
>> + P_BIAS_PLL_CC_CLK,
>> + P_BIAS_PLL_NSS_NOC_CLK,
>> + P_BIAS_PLL_UBI_NC_CLK,
>> + P_GCC_GPLL0_OUT_AUX,
>> + P_UBI32_PLL_OUT_MAIN,
>> + P_UNIPHY0_GCC_RX_CLK,
>> + P_UNIPHY0_GCC_TX_CLK,
>> + P_UNIPHY1_GCC_RX_CLK,
>> + P_UNIPHY1_GCC_TX_CLK,
>> + P_UNIPHY2_GCC_RX_CLK,
>> + P_UNIPHY2_GCC_TX_CLK,
>> + P_XO,
>> +};
>> +
>> +static const struct alpha_pll_config ubi32_pll_config = {
>> + .l = 0x3e,
>> + .alpha = 0x6666,
>> + .config_ctl_val = 0x200d4aa8,
>> + .config_ctl_hi_val = 0x3c,
>> + .main_output_mask = BIT(0),
>> + .aux_output_mask = BIT(1),
>> + .pre_div_val = 0x0,
>> + .pre_div_mask = BIT(12),
>> + .post_div_val = 0x0,
>> + .post_div_mask = GENMASK(9, 8),
>> + .alpha_en_mask = BIT(24),
>> + .test_ctl_val = 0x1c0000c0,
>> + .test_ctl_hi_val = 0x4000,
>> +};
>> +
>> +static struct clk_alpha_pll ubi32_pll_main = {
>> + .offset = 0x28000,
>> + .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_NSS_HUAYRA],
>> + .flags = SUPPORTS_DYNAMIC_UPDATE,
>> + .clkr = {
>> + .hw.init = &(const struct clk_init_data) {
>> + .name = "ubi32_pll_main",
>> + .parent_data = &(const struct clk_parent_data) {
>> + .index = DT_XO,
>> + },
>> + .num_parents = 1,
>> + .ops = &clk_alpha_pll_huayra_ops,
>> + },
>> + },
>> +};
>> +
>> +static struct clk_alpha_pll_postdiv ubi32_pll = {
>> + .offset = 0x28000,
>> + .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_NSS_HUAYRA],
>> + .width = 2,
>> + .clkr.hw.init = &(const struct clk_init_data) {
>> + .name = "ubi32_pll",
>> + .parent_hws = (const struct clk_hw *[]) {
>> + &ubi32_pll_main.clkr.hw
>> + },
>> + .num_parents = 1,
>> + .ops = &clk_alpha_pll_postdiv_ro_ops,
>> + .flags = CLK_SET_RATE_PARENT,
>> + },
>> +};
>> +
>
> [skipped the rest, LGTM]
>
> +
>> +static int nss_cc_ipq9574_probe(struct platform_device *pdev)
>> +{
>> + struct regmap *regmap;
>> + struct qcom_cc_desc nsscc_ipq9574_desc = nss_cc_ipq9574_desc;
>> +
>> + regmap = qcom_cc_map(pdev, &nsscc_ipq9574_desc);
>> + if (IS_ERR(regmap))
>> + return PTR_ERR(regmap);
>> +
>> + /* SW Workaround for UBI Huayra PLL */
>> + regmap_update_bits(regmap, 0x2800C, BIT(26), BIT(26));
>
> Can we directly set the correct value via ubi32_pll_config.test_ctl_val ?
Sure, will check and update in V2
>
>> +
>> + clk_alpha_pll_configure(&ubi32_pll_main, regmap, &ubi32_pll_config);
>> +
>> + return qcom_cc_really_probe(pdev, &nsscc_ipq9574_desc, regmap);
>> +}
>> +
>> +static struct platform_driver nss_cc_ipq9574_driver = {
>> + .probe = nss_cc_ipq9574_probe,
>> + .driver = {
>> + .name = "qcom,nsscc-ipq9574",
>> + .of_match_table = nss_cc_ipq9574_match_table,
>> + },
>> +};
>> +
>> +static int __init nss_cc_ipq9574_init(void)
>> +{
>> + return platform_driver_register(&nss_cc_ipq9574_driver);
>> +}
>> +subsys_initcall(nss_cc_ipq9574_init);
>> +
>> +static void __exit nss_cc_ipq9574_exit(void)
>> +{
>> + platform_driver_unregister(&nss_cc_ipq9574_driver);
>> +}
>> +module_exit(nss_cc_ipq9574_exit);
>
> module_platform_driver ?
okay
Thanks,
Devi Priya
>
>> +
>> +MODULE_DESCRIPTION("QTI NSS_CC IPQ9574 Driver");
>> +MODULE_LICENSE("GPL");
>
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