linux-kernel - Re: [PATCH v2 1/3] ARM: DRA7: hwmod: Add reset data for PCIe

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Message-ID: <56968D59.3010608@ti.com>
Date:	Wed, 13 Jan 2016 11:46:01 -0600
From:	Suman Anna <s-anna@...com>
To:	Tony Lindgren <tony@...mide.com>,
	Kishon Vijay Abraham I <kishon@...com>
CC:	Bjorn Helgaas <bhelgaas@...gle.com>, <richardcochran@...il.com>,
	Russell King <linux@....linux.org.uk>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <nsekhar@...com>,
	Paul Walmsley <paul@...an.com>, Tero Kristo <t-kristo@...com>
Subject: Re: [PATCH v2 1/3] ARM: DRA7: hwmod: Add reset data for PCIe

On 01/13/2016 11:13 AM, Tony Lindgren wrote:
> * Kishon Vijay Abraham I <kishon@...com> [160112 22:48]:
>> Add PCIe reset data to PCIe hwmods on DRA7x.
> 
> Adding Paul and Tero to Cc. I don't see other solution to get
> the PCI driver working until the reset driver is available.
> 
> Regards,
> 
> Tony
> 
>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
>> Signed-off-by: Sekhar Nori <nsekhar@...com>

Reviewed-by: Suman Anna <s-anna@...com>

>> ---
>>  arch/arm/mach-omap2/omap_hwmod_7xx_data.c |   15 +++++++++++++++
>>  arch/arm/mach-omap2/prm7xx.h              |    1 +
>>  2 files changed, 16 insertions(+)
>>
>> diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
>> index ee4e044..1281deb 100644
>> --- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
>> +++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
>> @@ -1532,14 +1532,21 @@ static struct omap_hwmod_class dra7xx_pciess_hwmod_class = {
>>  };
>>  
>>  /* pcie1 */
>> +static struct omap_hwmod_rst_info dra7xx_pciess1_resets[] = {
>> +	{ .name = "pcie", .rst_shift = 0 },
>> +};
>> +
>>  static struct omap_hwmod dra7xx_pciess1_hwmod = {
>>  	.name		= "pcie1",
>>  	.class		= &dra7xx_pciess_hwmod_class,
>>  	.clkdm_name	= "pcie_clkdm",
>> +	.rst_lines	= dra7xx_pciess1_resets,
>> +	.rst_lines_cnt	= ARRAY_SIZE(dra7xx_pciess1_resets),
>>  	.main_clk	= "l4_root_clk_div",
>>  	.prcm = {
>>  		.omap4 = {
>>  			.clkctrl_offs = DRA7XX_CM_L3INIT_PCIESS1_CLKCTRL_OFFSET,
>> +			.rstctrl_offs = DRA7XX_RM_L3INIT_PCIESS_RSTCTRL_OFFSET,
>>  			.context_offs = DRA7XX_RM_L3INIT_PCIESS1_CONTEXT_OFFSET,
>>  			.modulemode   = MODULEMODE_SWCTRL,
>>  		},
>> @@ -1547,14 +1554,22 @@ static struct omap_hwmod dra7xx_pciess1_hwmod = {
>>  };
>>  
>>  /* pcie2 */
>> +static struct omap_hwmod_rst_info dra7xx_pciess2_resets[] = {
>> +	{ .name = "pcie", .rst_shift = 1 },
>> +};
>> +
>> +/* pcie2 */
>>  static struct omap_hwmod dra7xx_pciess2_hwmod = {
>>  	.name		= "pcie2",
>>  	.class		= &dra7xx_pciess_hwmod_class,
>>  	.clkdm_name	= "pcie_clkdm",
>> +	.rst_lines	= dra7xx_pciess2_resets,
>> +	.rst_lines_cnt	= ARRAY_SIZE(dra7xx_pciess2_resets),
>>  	.main_clk	= "l4_root_clk_div",
>>  	.prcm = {
>>  		.omap4 = {
>>  			.clkctrl_offs = DRA7XX_CM_L3INIT_PCIESS2_CLKCTRL_OFFSET,
>> +			.rstctrl_offs = DRA7XX_RM_L3INIT_PCIESS_RSTCTRL_OFFSET,
>>  			.context_offs = DRA7XX_RM_L3INIT_PCIESS2_CONTEXT_OFFSET,
>>  			.modulemode   = MODULEMODE_SWCTRL,
>>  		},
>> diff --git a/arch/arm/mach-omap2/prm7xx.h b/arch/arm/mach-omap2/prm7xx.h
>> index cc1e6a2..294deed 100644
>> --- a/arch/arm/mach-omap2/prm7xx.h
>> +++ b/arch/arm/mach-omap2/prm7xx.h
>> @@ -360,6 +360,7 @@
>>  /* PRM.L3INIT_PRM register offsets */
>>  #define DRA7XX_PM_L3INIT_PWRSTCTRL_OFFSET			0x0000
>>  #define DRA7XX_PM_L3INIT_PWRSTST_OFFSET				0x0004
>> +#define DRA7XX_RM_L3INIT_PCIESS_RSTCTRL_OFFSET			0x0010
>>  #define DRA7XX_PM_L3INIT_MMC1_WKDEP_OFFSET			0x0028
>>  #define DRA7XX_RM_L3INIT_MMC1_CONTEXT_OFFSET			0x002c
>>  #define DRA7XX_PM_L3INIT_MMC2_WKDEP_OFFSET			0x0030
>> -- 
>> 1.7.9.5
>>