From: Zhou Yanjie <zhouyanjie@wanyeetech.com>
To: Paul Cercueil <paul@crapouillou.net>
Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, sboyd@kernel.org,
mturquette@baylibre.com, robh+dt@kernel.org,
mark.rutland@arm.com, dongsheng.qiu@ingenic.com,
yanfei.li@ingenic.com, sernia.zhou@foxmail.com,
zhenwenjin@gmail.com
Subject: Re: [PATCH v6 4/6] clk: Ingenic: Add CGU driver for X1830.
Date: Sun, 22 Mar 2020 20:30:50 +0800 [thread overview]
Message-ID: <5E775A7A.70107@wanyeetech.com> (raw)
In-Reply-To: <1584865262-25297-6-git-send-email-zhouyanjie@wanyeetech.com>
Hi Paul,
On 2020年03月22日 20:08, Paul Cercueil wrote:
> Hi Zhou,
>
> Le dim. 22 mars 2020 à 16:21, 周琰杰 (Zhou Yanjie)
> <zhouyanjie@wanyeetech.com> a écrit :
>> Add support for the clocks provided by the CGU in the Ingenic X1830
>> SoC, making use of the cgu code to do the heavy lifting.
>>
>> Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
>> ---
>>
>> Notes:
>> v1->v2:
>> 1.Use two fields (pll_reg & bypass_reg) instead of the 2-values
>> array (reg[2]).
>> 2.Remove the "pll_info->version" and add a
>> "pll_info->rate_multiplier".
>> 3.Change my Signed-off-by from "Zhou Yanjie <zhouyanjie@zoho.com>"
>> to "周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>" because
>> the old mailbox is in an unstable state.
>>
>> v2->v3:
>> Adjust order from [4/5] in v2 to [5/5] in v3.
>>
>> v3->v4:
>> Adjust order from [5/5] in v3 to [4/4] in v4.
>>
>> v4->v5:
>> Rebase on top of kernel 5.6-rc1.
>>
>> v5->v6:
>> Add missing part of X1830's CGU.
>>
>> drivers/clk/ingenic/Kconfig | 10 ++
>> drivers/clk/ingenic/Makefile | 1 +
>> drivers/clk/ingenic/x1830-cgu.c | 387
>> ++++++++++++++++++++++++++++++++++++++++
>> 3 files changed, 398 insertions(+)
>> create mode 100644 drivers/clk/ingenic/x1830-cgu.c
>>
>> diff --git a/drivers/clk/ingenic/Kconfig b/drivers/clk/ingenic/Kconfig
>> index b4555b4..580b0cf 100644
>> --- a/drivers/clk/ingenic/Kconfig
>> +++ b/drivers/clk/ingenic/Kconfig
>> @@ -55,6 +55,16 @@ config INGENIC_CGU_X1000
>>
>> If building for a X1000 SoC, you want to say Y here.
>>
>> +config INGENIC_CGU_X1830
>> + bool "Ingenic X1830 CGU driver"
>> + default MACH_X1830
>> + select INGENIC_CGU_COMMON
>> + help
>> + Support the clocks provided by the CGU hardware on Ingenic X1830
>> + and compatible SoCs.
>> +
>> + If building for a X1830 SoC, you want to say Y here.
>> +
>> config INGENIC_TCU_CLK
>> bool "Ingenic JZ47xx TCU clocks driver"
>> default MACH_INGENIC
>> diff --git a/drivers/clk/ingenic/Makefile b/drivers/clk/ingenic/Makefile
>> index 8b1dad9..aaa4bff 100644
>> --- a/drivers/clk/ingenic/Makefile
>> +++ b/drivers/clk/ingenic/Makefile
>> @@ -5,4 +5,5 @@ obj-$(CONFIG_INGENIC_CGU_JZ4725B) += jz4725b-cgu.o
>> obj-$(CONFIG_INGENIC_CGU_JZ4770) += jz4770-cgu.o
>> obj-$(CONFIG_INGENIC_CGU_JZ4780) += jz4780-cgu.o
>> obj-$(CONFIG_INGENIC_CGU_X1000) += x1000-cgu.o
>> +obj-$(CONFIG_INGENIC_CGU_X1830) += x1830-cgu.o
>> obj-$(CONFIG_INGENIC_TCU_CLK) += tcu.o
>> diff --git a/drivers/clk/ingenic/x1830-cgu.c
>> b/drivers/clk/ingenic/x1830-cgu.c
>> new file mode 100644
>> index 00000000..0bc927f
>> --- /dev/null
>> +++ b/drivers/clk/ingenic/x1830-cgu.c
>> @@ -0,0 +1,387 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * X1830 SoC CGU driver
>> + * Copyright (c) 2019 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
>> + */
>> +
>> +#include <linux/clk-provider.h>
>> +#include <linux/delay.h>
>> +#include <linux/of.h>
>> +#include <dt-bindings/clock/x1830-cgu.h>
>
> Please order the includes alphabetically (but with <> ones still
> before "" ones, and with a blank line between the two).
>
Sure, seems the "x1000-cgu.c" also has this problem, I will fix both in
next version.
>> +#include "cgu.h"
>> +#include "pm.h"
>> +
>> +/* CGU register offsets */
>> +#define CGU_REG_CPCCR 0x00
>> +#define CGU_REG_CPPCR 0x0c
>> +#define CGU_REG_APLL 0x10
>> +#define CGU_REG_MPLL 0x14
>> +#define CGU_REG_CLKGR0 0x20
>> +#define CGU_REG_OPCR 0x24
>> +#define CGU_REG_CLKGR1 0x28
>> +#define CGU_REG_DDRCDR 0x2c
>> +#define CGU_REG_USBPCR 0x3c
>> +#define CGU_REG_USBRDT 0x40
>> +#define CGU_REG_USBVBFIL 0x44
>> +#define CGU_REG_USBPCR1 0x48
>> +#define CGU_REG_MACCDR 0x54
>> +#define CGU_REG_EPLL 0x58
>> +#define CGU_REG_I2SCDR 0x60
>> +#define CGU_REG_LPCDR 0x64
>> +#define CGU_REG_MSC0CDR 0x68
>> +#define CGU_REG_I2SCDR1 0x70
>> +#define CGU_REG_SSICDR 0x74
>> +#define CGU_REG_CIMCDR 0x7c
>> +#define CGU_REG_MSC1CDR 0xa4
>> +#define CGU_REG_CMP_INTR 0xb0
>> +#define CGU_REG_CMP_INTRE 0xb4
>> +#define CGU_REG_DRCG 0xd0
>> +#define CGU_REG_CPCSR 0xd4
>> +#define CGU_REG_VPLL 0xe0
>> +#define CGU_REG_MACPHYC 0xe8
>> +
>> +/* bits within the OPCR register */
>> +#define OPCR_SPENDN0 BIT(7)
>> +#define OPCR_SPENDN1 BIT(6)
>> +
>> +static struct ingenic_cgu *cgu;
>
> I don't think you need this global variable at all.
>
This variable will be used in x1830_cgu_init(), and it is also the same
in other cgu drivers of other Ingenic processors, I think we should keep it.
Thanks and best regards!
> -Paul
>
>> +
>> +static const s8 pll_od_encoding[64] = {
>> + 0x0, 0x1, -1, 0x2, -1, -1, -1, 0x3,
>> + -1, -1, -1, -1, -1, -1, -1, 0x4,
>> + -1, -1, -1, -1, -1, -1, -1, -1,
>> + -1, -1, -1, -1, -1, -1, -1, 0x5,
>> + -1, -1, -1, -1, -1, -1, -1, -1,
>> + -1, -1, -1, -1, -1, -1, -1, -1,
>> + -1, -1, -1, -1, -1, -1, -1, -1,
>> + -1, -1, -1, -1, -1, -1, -1, 0x6,
>> +};
>> +
>> +static const struct ingenic_cgu_clk_info x1830_cgu_clocks[] = {
>> +
>> + /* External clocks */
>> +
>> + [X1830_CLK_EXCLK] = { "ext", CGU_CLK_EXT },
>> + [X1830_CLK_RTCLK] = { "rtc", CGU_CLK_EXT },
>> +
>> + /* PLLs */
>> +
>> + [X1830_CLK_APLL] = {
>> + "apll", CGU_CLK_PLL,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .pll = {
>> + .reg = CGU_REG_APLL,
>> + .rate_multiplier = 2,
>> + .m_shift = 20,
>> + .m_bits = 9,
>> + .m_offset = 1,
>> + .n_shift = 14,
>> + .n_bits = 6,
>> + .n_offset = 1,
>> + .od_shift = 11,
>> + .od_bits = 3,
>> + .od_max = 64,
>> + .od_encoding = pll_od_encoding,
>> + .bypass_reg = CGU_REG_CPPCR,
>> + .bypass_bit = 30,
>> + .enable_bit = 0,
>> + .stable_bit = 3,
>> + },
>> + },
>> +
>> + [X1830_CLK_MPLL] = {
>> + "mpll", CGU_CLK_PLL,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .pll = {
>> + .reg = CGU_REG_MPLL,
>> + .rate_multiplier = 2,
>> + .m_shift = 20,
>> + .m_bits = 9,
>> + .m_offset = 1,
>> + .n_shift = 14,
>> + .n_bits = 6,
>> + .n_offset = 1,
>> + .od_shift = 11,
>> + .od_bits = 3,
>> + .od_max = 64,
>> + .od_encoding = pll_od_encoding,
>> + .bypass_reg = CGU_REG_CPPCR,
>> + .bypass_bit = 28,
>> + .enable_bit = 0,
>> + .stable_bit = 3,
>> + },
>> + },
>> +
>> + [X1830_CLK_EPLL] = {
>> + "epll", CGU_CLK_PLL,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .pll = {
>> + .reg = CGU_REG_EPLL,
>> + .rate_multiplier = 2,
>> + .m_shift = 20,
>> + .m_bits = 9,
>> + .m_offset = 1,
>> + .n_shift = 14,
>> + .n_bits = 6,
>> + .n_offset = 1,
>> + .od_shift = 11,
>> + .od_bits = 3,
>> + .od_max = 64,
>> + .od_encoding = pll_od_encoding,
>> + .bypass_reg = CGU_REG_CPPCR,
>> + .bypass_bit = 24,
>> + .enable_bit = 0,
>> + .stable_bit = 3,
>> + },
>> + },
>> +
>> + [X1830_CLK_VPLL] = {
>> + "vpll", CGU_CLK_PLL,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .pll = {
>> + .reg = CGU_REG_VPLL,
>> + .rate_multiplier = 2,
>> + .m_shift = 20,
>> + .m_bits = 9,
>> + .m_offset = 1,
>> + .n_shift = 14,
>> + .n_bits = 6,
>> + .n_offset = 1,
>> + .od_shift = 11,
>> + .od_bits = 3,
>> + .od_max = 64,
>> + .od_encoding = pll_od_encoding,
>> + .bypass_reg = CGU_REG_CPPCR,
>> + .bypass_bit = 26,
>> + .enable_bit = 0,
>> + .stable_bit = 3,
>> + },
>> + },
>> +
>> + /* Muxes & dividers */
>> +
>> + [X1830_CLK_SCLKA] = {
>> + "sclk_a", CGU_CLK_MUX,
>> + .parents = { -1, X1830_CLK_EXCLK, X1830_CLK_APLL, -1 },
>> + .mux = { CGU_REG_CPCCR, 30, 2 },
>> + },
>> +
>> + [X1830_CLK_CPUMUX] = {
>> + "cpu_mux", CGU_CLK_MUX,
>> + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 },
>> + .mux = { CGU_REG_CPCCR, 28, 2 },
>> + },
>> +
>> + [X1830_CLK_CPU] = {
>> + "cpu", CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { X1830_CLK_CPUMUX, -1, -1, -1 },
>> + .div = { CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1 },
>> + .gate = { CGU_REG_CLKGR1, 15 },
>> + },
>> +
>> + [X1830_CLK_L2CACHE] = {
>> + "l2cache", CGU_CLK_DIV,
>> + .parents = { X1830_CLK_CPUMUX, -1, -1, -1 },
>> + .div = { CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1 },
>> + },
>> +
>> + [X1830_CLK_AHB0] = {
>> + "ahb0", CGU_CLK_MUX | CGU_CLK_DIV,
>> + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 },
>> + .mux = { CGU_REG_CPCCR, 26, 2 },
>> + .div = { CGU_REG_CPCCR, 8, 1, 4, 21, -1, -1 },
>> + },
>> +
>> + [X1830_CLK_AHB2PMUX] = {
>> + "ahb2_apb_mux", CGU_CLK_MUX,
>> + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 },
>> + .mux = { CGU_REG_CPCCR, 24, 2 },
>> + },
>> +
>> + [X1830_CLK_AHB2] = {
>> + "ahb2", CGU_CLK_DIV,
>> + .parents = { X1830_CLK_AHB2PMUX, -1, -1, -1 },
>> + .div = { CGU_REG_CPCCR, 12, 1, 4, 20, -1, -1 },
>> + },
>> +
>> + [X1830_CLK_PCLK] = {
>> + "pclk", CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { X1830_CLK_AHB2PMUX, -1, -1, -1 },
>> + .div = { CGU_REG_CPCCR, 16, 1, 4, 20, -1, -1 },
>> + .gate = { CGU_REG_CLKGR1, 14 },
>> + },
>> +
>> + [X1830_CLK_DDR] = {
>> + "ddr", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 },
>> + .mux = { CGU_REG_DDRCDR, 30, 2 },
>> + .div = { CGU_REG_DDRCDR, 0, 1, 4, 29, 28, 27 },
>> + .gate = { CGU_REG_CLKGR0, 31 },
>> + },
>> +
>> + [X1830_CLK_MAC] = {
>> + "mac", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL,
>> + X1830_CLK_VPLL, X1830_CLK_EPLL },
>> + .mux = { CGU_REG_MACCDR, 30, 2 },
>> + .div = { CGU_REG_MACCDR, 0, 1, 8, 29, 28, 27 },
>> + .gate = { CGU_REG_CLKGR1, 4 },
>> + },
>> +
>> + [X1830_CLK_LCD] = {
>> + "lcd", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL,
>> + X1830_CLK_VPLL, X1830_CLK_EPLL },
>> + .mux = { CGU_REG_LPCDR, 30, 2 },
>> + .div = { CGU_REG_LPCDR, 0, 1, 8, 28, 27, 26 },
>> + .gate = { CGU_REG_CLKGR1, 9 },
>> + },
>> +
>> + [X1830_CLK_MSCMUX] = {
>> + "msc_mux", CGU_CLK_MUX,
>> + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL,
>> + X1830_CLK_VPLL, X1830_CLK_EPLL },
>> + .mux = { CGU_REG_MSC0CDR, 30, 2 },
>> + },
>> +
>> + [X1830_CLK_MSC0] = {
>> + "msc0", CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { X1830_CLK_MSCMUX, -1, -1, -1 },
>> + .div = { CGU_REG_MSC0CDR, 0, 2, 8, 29, 28, 27 },
>> + .gate = { CGU_REG_CLKGR0, 4 },
>> + },
>> +
>> + [X1830_CLK_MSC1] = {
>> + "msc1", CGU_CLK_DIV | CGU_CLK_GATE,
>> + .parents = { X1830_CLK_MSCMUX, -1, -1, -1 },
>> + .div = { CGU_REG_MSC1CDR, 0, 2, 8, 29, 28, 27 },
>> + .gate = { CGU_REG_CLKGR0, 5 },
>> + },
>> +
>> + [X1830_CLK_SSIPLL] = {
>> + "ssi_pll", CGU_CLK_MUX | CGU_CLK_DIV,
>> + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL,
>> + X1830_CLK_VPLL, X1830_CLK_EPLL },
>> + .mux = { CGU_REG_SSICDR, 30, 2 },
>> + .div = { CGU_REG_SSICDR, 0, 1, 8, 28, 27, 26 },
>> + },
>> +
>> + [X1830_CLK_SSIPLL_DIV2] = {
>> + "ssi_pll_div2", CGU_CLK_FIXDIV,
>> + .parents = { X1830_CLK_SSIPLL },
>> + .fixdiv = { 2 },
>> + },
>> +
>> + [X1830_CLK_SSIMUX] = {
>> + "ssi_mux", CGU_CLK_MUX,
>> + .parents = { X1830_CLK_EXCLK, X1830_CLK_SSIPLL_DIV2, -1, -1 },
>> + .mux = { CGU_REG_SSICDR, 29, 1 },
>> + },
>> +
>> + /* Gate-only clocks */
>> +
>> + [X1830_CLK_EMC] = {
>> + "emc", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_AHB2, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 0 },
>> + },
>> +
>> + [X1830_CLK_EFUSE] = {
>> + "efuse", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_AHB2, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 1 },
>> + },
>> +
>> + [X1830_CLK_OTG] = {
>> + "otg", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 3 },
>> + },
>> +
>> + [X1830_CLK_SSI0] = {
>> + "ssi0", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_SSIMUX, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 6 },
>> + },
>> +
>> + [X1830_CLK_SMB0] = {
>> + "smb0", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_PCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 7 },
>> + },
>> +
>> + [X1830_CLK_SMB1] = {
>> + "smb1", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_PCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 8 },
>> + },
>> +
>> + [X1830_CLK_SMB2] = {
>> + "smb2", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_PCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 9 },
>> + },
>> +
>> + [X1830_CLK_UART0] = {
>> + "uart0", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 14 },
>> + },
>> +
>> + [X1830_CLK_UART1] = {
>> + "uart1", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 15 },
>> + },
>> +
>> + [X1830_CLK_SSI1] = {
>> + "ssi1", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_SSIMUX, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 19 },
>> + },
>> +
>> + [X1830_CLK_SFC] = {
>> + "sfc", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_SSIPLL, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 20 },
>> + },
>> +
>> + [X1830_CLK_PDMA] = {
>> + "pdma", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR0, 21 },
>> + },
>> +
>> + [X1830_CLK_DTRNG] = {
>> + "dtrng", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_PCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR1, 1 },
>> + },
>> +
>> + [X1830_CLK_OST] = {
>> + "ost", CGU_CLK_GATE,
>> + .parents = { X1830_CLK_EXCLK, -1, -1, -1 },
>> + .gate = { CGU_REG_CLKGR1, 11 },
>> + },
>> +};
>> +
>> +static void __init x1830_cgu_init(struct device_node *np)
>> +{
>> + int retval;
>> +
>> + cgu = ingenic_cgu_new(x1830_cgu_clocks,
>> + ARRAY_SIZE(x1830_cgu_clocks), np);
>> + if (!cgu) {
>> + pr_err("%s: failed to initialise CGU\n", __func__);
>> + return;
>> + }
>> +
>> + retval = ingenic_cgu_register_clocks(cgu);
>> + if (retval) {
>> + pr_err("%s: failed to register CGU Clocks\n", __func__);
>> + return;
>> + }
>> +
>> + ingenic_cgu_register_syscore_ops(cgu);
>> +}
>> +CLK_OF_DECLARE_DRIVER(x1830_cgu, "ingenic,x1830-cgu", x1830_cgu_init);
>> --
>> 2.7.4
>>
>
next prev parent reply other threads:[~2020-03-22 12:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-22 8:20 Add support for the X1830 and fix bugs for X1000 v6 周琰杰 (Zhou Yanjie)
2020-03-22 8:20 ` [PATCH v6 0/6] Add support for the X1830 and fix bugs for X1000 周琰杰 (Zhou Yanjie)
2020-03-22 8:20 ` [PATCH v6 1/6] clk: Ingenic: Remove unnecessary spinlock when reading registers 周琰杰 (Zhou Yanjie)
2020-03-22 8:20 ` [PATCH v6 2/6] clk: Ingenic: Adjust cgu code to make it compatible with X1830 周琰杰 (Zhou Yanjie)
2020-03-22 12:25 ` Zhou Yanjie
2020-03-22 8:20 ` [PATCH v6 3/6] dt-bindings: clock: Add X1830 bindings 周琰杰 (Zhou Yanjie)
2020-03-22 8:21 ` [PATCH v6 4/6] clk: Ingenic: Add CGU driver for X1830 周琰杰 (Zhou Yanjie)
2020-03-22 12:30 ` Zhou Yanjie [this message]
2020-03-22 12:59 ` Zhou Yanjie
2020-03-22 8:21 ` [PATCH v6 5/6] dt-bindings: clock: Add and reorder ABI for X1000 周琰杰 (Zhou Yanjie)
2020-03-22 8:21 ` [PATCH v6 6/6] clk: X1000: Add FIXDIV for SSI clock of X1000 周琰杰 (Zhou Yanjie)
2020-03-22 12:43 ` Zhou Yanjie
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