From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chin Liang See Date: Tue, 18 Oct 2016 10:22:45 +0700 Subject: [U-Boot] [PATCH v3 04/12] arm: socfpga: clkmgr: Separate the Clock Manager for Stratix 10 In-Reply-To: <8721fe3e-f130-e9db-17aa-59c0d26f8430@denx.de> References: <1476347589-5578-1-git-send-email-clsee@altera.com> <1476347589-5578-5-git-send-email-clsee@altera.com> <1476711170.3076.6.camel@intel.com> <2149f497-21a2-cae1-62ed-f2b8ff2f70da@denx.de> <1476716843.4286.4.camel@altera.com> <8f733b4e-5b54-a826-b18f-8a0b76a03998@denx.de> <1476718094.4286.15.camel@altera.com> <1476719984.4286.25.camel@altera.com> <8721fe3e-f130-e9db-17aa-59c0d26f8430@denx.de> Message-ID: <1476760965.4604.6.camel@intel.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Sen, 2016-10-17 at 18:14 +0200, Marek Vasut wrote: > On 10/17/2016 05:59 PM, Chin Liang See wrote: > > > > On Sen, 2016-10-17 at 17:39 +0200, Marek Vasut wrote: > > > > > > On 10/17/2016 05:28 PM, Chin Liang See wrote: > > > > > > > > > > > > On Sen, 2016-10-17 at 17:20 +0200, Marek Vasut wrote: > > > > > > > > > > > > > > > On 10/17/2016 05:07 PM, Chin Liang See wrote: > > > > > > > > > > > > > > > > > > > > > > > > On Sen, 2016-10-17 at 15:42 +0200, Marek Vasut wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > On 10/17/2016 03:32 PM, See, Chin Liang wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Min, 2016-10-16 at 17:33 +0200, Marek Vasut wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On 10/13/2016 10:33 AM, Chin Liang See wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Separate the Clock Manager to support both GEN5 SoC > > > > > > > > > > and > > > > > > > > > > Stratix 10 SoC. > > > > > > > > > > > > > > > > > > > > Signed-off-by: Chin Liang See > > > > > > > > > > Cc: Marek Vasut > > > > > > > > > > Cc: Dinh Nguyen > > > > > > > > > > Cc: Ley Foon Tan > > > > > > > > > > Cc: Tien Fong Chee > > > > > > > > > > --- > > > > > > > > > > ?arch/arm/mach-socfpga/clock_manager.c | 8 ++++++++ > > > > > > > > > > ?1 file changed, 8 insertions(+) > > > > > > > > > > > > > > > > > > > > diff --git a/arch/arm/mach-socfpga/clock_manager.c > > > > > > > > > > b/arch/arm/mach- > > > > > > > > > > socfpga/clock_manager.c > > > > > > > > > > index aa71636..0d67b3c 100644 > > > > > > > > > > --- a/arch/arm/mach-socfpga/clock_manager.c > > > > > > > > > > +++ b/arch/arm/mach-socfpga/clock_manager.c > > > > > > > > > > @@ -10,6 +10,7 @@ > > > > > > > > > > > > > > > > > > > > ?DECLARE_GLOBAL_DATA_PTR; > > > > > > > > > > > > > > > > > > > > +#if defined(CONFIG_TARGET_SOCFPGA_GEN5) > > > > > > > > > > ?static const struct socfpga_clock_manager > > > > > > > > > > *clock_manager_base > > > > > > > > > > = > > > > > > > > > > ??????(struct socfpga_clock_manager > > > > > > > > > > *)SOCFPGA_CLKMGR_ADDRESS; > > > > > > > > > > > > > > > > > > > > @@ -446,9 +447,11 @@ unsigned int > > > > > > > > > > cm_get_l4_sp_clk_hz(void) > > > > > > > > > > > > > > > > > > > > ??????return clock; > > > > > > > > > > ?} > > > > > > > > > > +#endif /* CONFIG_TARGET_SOCFPGA_GEN5 */ > > > > > > > > > > > > > > > > > > > > ?unsigned int cm_get_mmc_controller_clk_hz(void) > > > > > > > > > > ?{ > > > > > > > > > > +#if defined(CONFIG_TARGET_SOCFPGA_GEN5) > > > > > > > > > > ??????uint32_t reg, clock = 0; > > > > > > > > > > > > > > > > > > > > ??????/* identify the source of MMC clock */ > > > > > > > > > > @@ -475,8 +478,12 @@ unsigned int > > > > > > > > > > cm_get_mmc_controller_clk_hz(void) > > > > > > > > > > ??????/* further divide by 4 as we have fixed > > > > > > > > > > divider > > > > > > > > > > at > > > > > > > > > > wrapper */ > > > > > > > > > > ??????clock /= 4; > > > > > > > > > > ??????return clock; > > > > > > > > > > +#elif defined(CONFIG_TARGET_SOCFPGA_STRATIX10) > > > > > > > > > > +?????return 25000000; > > > > > > > > > Is this always gonna be the case or is this S10VP > > > > > > > > > specific ? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +#endif /* CONFIG_TARGET_SOCFPGA_GEN5 */ > > > > > > > > > > ?} > > > > > > > > > > > > > > > > > > > > +#if defined(CONFIG_TARGET_SOCFPGA_GEN5) > > > > > > > > > > ?unsigned int cm_get_qspi_controller_clk_hz(void) > > > > > > > > > > ?{ > > > > > > > > > > ??????uint32_t reg, clock = 0; > > > > > > > > > > @@ -556,3 +563,4 @@ U_BOOT_CMD( > > > > > > > > > > ??????"display clocks", > > > > > > > > > > ??????"" > > > > > > > > > Why does the clock display not work on S10 ? Are some > > > > > > > > > functions > > > > > > > > > missing? > > > > > > > > Not for SOCVP. But will be added in later stage when > > > > > > > > testing > > > > > > > > against > > > > > > > > emulation > > > > > > > How hard would it be to add this missing functionality > > > > > > > now ? > > > > > > > > > > > > > That will take weeks as that need to be validated as whole > > > > > > in > > > > > > emulation > > > > > > platform. > > > > > You mean printing a few clock information based on some > > > > > values > > > > > from > > > > > registers would take weeks ? Why ? > > > > > > > > > Oh actually I am referring all the managers code such as full > > > > Clock > > > > Manager, Reset Manager ... plus testing. Testing is the part > > > > take > > > > some > > > > significant time especially slow when come to emulation. > > > Just use empty functions for the clock init code (since it's not > > > needed > > > on the socvp) and populate the clock reporting functions. That > > > should > > > be > > > simple, right ? > > Can be done but the value won't be meaningful as the register is > > uninitialzied. Unless we hardcode to a hard value which might not > > sound > > right. > Ha, I see. Is there some sane default for the SoCVP ? > It will not meaningful as performance is same even with frequency change :) But definitely will address this in coming weeks as I am already working on the emulation.? Thanks Chin Liang > -- > Best regards, > Marek Vasut >