| Message ID | 65d08f34741f1ffa94a53bc128433e6c958091d2.1573595319.git.leonard.crestez@nxp.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | PM / devfreq: Add dynamic scaling for imx8m ddr controller | expand |
Hi Leonard, > Subject: [PATCH v5 2/5] clk: imx: Mark dram pll on 8mm and 8mn with > CLK_GET_RATE_NOCACHE This patch will conflict with https://patchwork.kernel.org/cover/11224933/ And I just post a new patch https://patchwork.kernel.org/patch/11241231/ Then no need add imx_1443x_dram_pll Regards, Peng. > > DRAM frequency switches are executed in firmware and can change the > configuration of the DRAM PLL outside linux. Mark these CLKs with > CLK_GET_RATE_NOCACHE so we always read back the PLL config registers > and recalculate rates. > > In current DRAM frequency tables on 8mm/8mn only the maximum frequency > uses the PLL so it's always configured in the same way. However reading back > the PLL configuration is the correct behavior and allows additional setpoints in > the future. > > Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> > Reviewed-by: Abel Vesa <abel.vesa@nxp.com> > --- > drivers/clk/imx/clk-imx8mm.c | 2 +- > drivers/clk/imx/clk-imx8mn.c | 2 +- > drivers/clk/imx/clk-pll14xx.c | 7 +++++++ > drivers/clk/imx/clk.h | 1 + > 4 files changed, 10 insertions(+), 2 deletions(-) > > diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c > index e2bc3c90d93c..9246e89bb5fd 100644 > --- a/drivers/clk/imx/clk-imx8mm.c > +++ b/drivers/clk/imx/clk-imx8mm.c > @@ -326,11 +326,11 @@ static int imx8mm_clocks_probe(struct > platform_device *pdev) > clks[IMX8MM_SYS_PLL3_REF_SEL] = imx_clk_mux("sys_pll3_ref_sel", > base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); > > clks[IMX8MM_AUDIO_PLL1] = imx_clk_pll14xx("audio_pll1", > "audio_pll1_ref_sel", base, &imx_1443x_pll); > clks[IMX8MM_AUDIO_PLL2] = imx_clk_pll14xx("audio_pll2", > "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll); > clks[IMX8MM_VIDEO_PLL1] = imx_clk_pll14xx("video_pll1", > "video_pll1_ref_sel", base + 0x28, &imx_1443x_pll); > - clks[IMX8MM_DRAM_PLL] = imx_clk_pll14xx("dram_pll", > "dram_pll_ref_sel", base + 0x50, &imx_1443x_pll); > + clks[IMX8MM_DRAM_PLL] = imx_clk_pll14xx("dram_pll", > +"dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll); > clks[IMX8MM_GPU_PLL] = imx_clk_pll14xx("gpu_pll", "gpu_pll_ref_sel", > base + 0x64, &imx_1416x_pll); > clks[IMX8MM_VPU_PLL] = imx_clk_pll14xx("vpu_pll", "vpu_pll_ref_sel", > base + 0x74, &imx_1416x_pll); > clks[IMX8MM_ARM_PLL] = imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", > base + 0x84, &imx_1416x_pll); > clks[IMX8MM_SYS_PLL1] = imx_clk_fixed("sys_pll1", 800000000); > clks[IMX8MM_SYS_PLL2] = imx_clk_fixed("sys_pll2", 1000000000); diff > --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c index > de905e278b80..4749beab9fc8 100644 > --- a/drivers/clk/imx/clk-imx8mn.c > +++ b/drivers/clk/imx/clk-imx8mn.c > @@ -323,11 +323,11 @@ static int imx8mn_clocks_probe(struct > platform_device *pdev) > clks[IMX8MN_SYS_PLL3_REF_SEL] = imx_clk_mux("sys_pll3_ref_sel", > base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); > > clks[IMX8MN_AUDIO_PLL1] = imx_clk_pll14xx("audio_pll1", > "audio_pll1_ref_sel", base, &imx_1443x_pll); > clks[IMX8MN_AUDIO_PLL2] = imx_clk_pll14xx("audio_pll2", > "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll); > clks[IMX8MN_VIDEO_PLL1] = imx_clk_pll14xx("video_pll1", > "video_pll1_ref_sel", base + 0x28, &imx_1443x_pll); > - clks[IMX8MN_DRAM_PLL] = imx_clk_pll14xx("dram_pll", > "dram_pll_ref_sel", base + 0x50, &imx_1443x_pll); > + clks[IMX8MN_DRAM_PLL] = imx_clk_pll14xx("dram_pll", > +"dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll); > clks[IMX8MN_GPU_PLL] = imx_clk_pll14xx("gpu_pll", "gpu_pll_ref_sel", > base + 0x64, &imx_1416x_pll); > clks[IMX8MN_VPU_PLL] = imx_clk_pll14xx("vpu_pll", "vpu_pll_ref_sel", > base + 0x74, &imx_1416x_pll); > clks[IMX8MN_ARM_PLL] = imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", > base + 0x84, &imx_1416x_pll); > clks[IMX8MN_SYS_PLL1] = imx_clk_fixed("sys_pll1", 800000000); > clks[IMX8MN_SYS_PLL2] = imx_clk_fixed("sys_pll2", 1000000000); diff > --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c index > 5c458199060a..a6d31a7262ef 100644 > --- a/drivers/clk/imx/clk-pll14xx.c > +++ b/drivers/clk/imx/clk-pll14xx.c > @@ -65,10 +65,17 @@ struct imx_pll14xx_clk imx_1443x_pll = { > .type = PLL_1443X, > .rate_table = imx_pll1443x_tbl, > .rate_count = ARRAY_SIZE(imx_pll1443x_tbl), }; > > +struct imx_pll14xx_clk imx_1443x_dram_pll = { > + .type = PLL_1443X, > + .rate_table = imx_pll1443x_tbl, > + .rate_count = ARRAY_SIZE(imx_pll1443x_tbl), > + .flags = CLK_GET_RATE_NOCACHE, > +}; > + > struct imx_pll14xx_clk imx_1416x_pll = { > .type = PLL_1416X, > .rate_table = imx_pll1416x_tbl, > .rate_count = ARRAY_SIZE(imx_pll1416x_tbl), }; diff --git > a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index > bc5bb6ac8636..81122c9ab842 100644 > --- a/drivers/clk/imx/clk.h > +++ b/drivers/clk/imx/clk.h > @@ -50,10 +50,11 @@ struct imx_pll14xx_clk { > int flags; > }; > > extern struct imx_pll14xx_clk imx_1416x_pll; extern struct > imx_pll14xx_clk imx_1443x_pll; > +extern struct imx_pll14xx_clk imx_1443x_dram_pll; > > #define imx_clk_cpu(name, parent_name, div, mux, pll, step) \ > imx_clk_hw_cpu(name, parent_name, div, mux, pll, step)->clk > > #define clk_register_gate2(dev, name, parent_name, flags, reg, bit_idx, \ > -- > 2.17.1
On 13.11.2019 09:29, Peng Fan wrote: > Hi Leonard, > >> Subject: [PATCH v5 2/5] clk: imx: Mark dram pll on 8mm and 8mn with >> CLK_GET_RATE_NOCACHE > > This patch will conflict with https://patchwork.kernel.org/cover/11224933/ > And I just post a new patch https://patchwork.kernel.org/patch/11241231/ > > Then no need add imx_1443x_dram_pll I saw those patches and the conflicts are minor (API cleanups, no functionality changes). I usually send patches against latest linux-next/master and this usually includes all accepted patches. If after the clk_hw refactorings are accepted I will rebase and resend. > Regards, > Peng. > >> >> DRAM frequency switches are executed in firmware and can change the >> configuration of the DRAM PLL outside linux. Mark these CLKs with >> CLK_GET_RATE_NOCACHE so we always read back the PLL config registers >> and recalculate rates. >> >> In current DRAM frequency tables on 8mm/8mn only the maximum frequency >> uses the PLL so it's always configured in the same way. However reading back >> the PLL configuration is the correct behavior and allows additional setpoints in >> the future. >> >> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> >> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> >> --- >> drivers/clk/imx/clk-imx8mm.c | 2 +- >> drivers/clk/imx/clk-imx8mn.c | 2 +- >> drivers/clk/imx/clk-pll14xx.c | 7 +++++++ >> drivers/clk/imx/clk.h | 1 + >> 4 files changed, 10 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c >> index e2bc3c90d93c..9246e89bb5fd 100644 >> --- a/drivers/clk/imx/clk-imx8mm.c >> +++ b/drivers/clk/imx/clk-imx8mm.c >> @@ -326,11 +326,11 @@ static int imx8mm_clocks_probe(struct >> platform_device *pdev) >> clks[IMX8MM_SYS_PLL3_REF_SEL] = imx_clk_mux("sys_pll3_ref_sel", >> base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); >> >> clks[IMX8MM_AUDIO_PLL1] = imx_clk_pll14xx("audio_pll1", >> "audio_pll1_ref_sel", base, &imx_1443x_pll); >> clks[IMX8MM_AUDIO_PLL2] = imx_clk_pll14xx("audio_pll2", >> "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll); >> clks[IMX8MM_VIDEO_PLL1] = imx_clk_pll14xx("video_pll1", >> "video_pll1_ref_sel", base + 0x28, &imx_1443x_pll); >> - clks[IMX8MM_DRAM_PLL] = imx_clk_pll14xx("dram_pll", >> "dram_pll_ref_sel", base + 0x50, &imx_1443x_pll); >> + clks[IMX8MM_DRAM_PLL] = imx_clk_pll14xx("dram_pll", >> +"dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll); >> clks[IMX8MM_GPU_PLL] = imx_clk_pll14xx("gpu_pll", "gpu_pll_ref_sel", >> base + 0x64, &imx_1416x_pll); >> clks[IMX8MM_VPU_PLL] = imx_clk_pll14xx("vpu_pll", "vpu_pll_ref_sel", >> base + 0x74, &imx_1416x_pll); >> clks[IMX8MM_ARM_PLL] = imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", >> base + 0x84, &imx_1416x_pll); >> clks[IMX8MM_SYS_PLL1] = imx_clk_fixed("sys_pll1", 800000000); >> clks[IMX8MM_SYS_PLL2] = imx_clk_fixed("sys_pll2", 1000000000); diff >> --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c index >> de905e278b80..4749beab9fc8 100644 >> --- a/drivers/clk/imx/clk-imx8mn.c >> +++ b/drivers/clk/imx/clk-imx8mn.c >> @@ -323,11 +323,11 @@ static int imx8mn_clocks_probe(struct >> platform_device *pdev) >> clks[IMX8MN_SYS_PLL3_REF_SEL] = imx_clk_mux("sys_pll3_ref_sel", >> base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); >> >> clks[IMX8MN_AUDIO_PLL1] = imx_clk_pll14xx("audio_pll1", >> "audio_pll1_ref_sel", base, &imx_1443x_pll); >> clks[IMX8MN_AUDIO_PLL2] = imx_clk_pll14xx("audio_pll2", >> "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll); >> clks[IMX8MN_VIDEO_PLL1] = imx_clk_pll14xx("video_pll1", >> "video_pll1_ref_sel", base + 0x28, &imx_1443x_pll); >> - clks[IMX8MN_DRAM_PLL] = imx_clk_pll14xx("dram_pll", >> "dram_pll_ref_sel", base + 0x50, &imx_1443x_pll); >> + clks[IMX8MN_DRAM_PLL] = imx_clk_pll14xx("dram_pll", >> +"dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll); >> clks[IMX8MN_GPU_PLL] = imx_clk_pll14xx("gpu_pll", "gpu_pll_ref_sel", >> base + 0x64, &imx_1416x_pll); >> clks[IMX8MN_VPU_PLL] = imx_clk_pll14xx("vpu_pll", "vpu_pll_ref_sel", >> base + 0x74, &imx_1416x_pll); >> clks[IMX8MN_ARM_PLL] = imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", >> base + 0x84, &imx_1416x_pll); >> clks[IMX8MN_SYS_PLL1] = imx_clk_fixed("sys_pll1", 800000000); >> clks[IMX8MN_SYS_PLL2] = imx_clk_fixed("sys_pll2", 1000000000); diff >> --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c index >> 5c458199060a..a6d31a7262ef 100644 >> --- a/drivers/clk/imx/clk-pll14xx.c >> +++ b/drivers/clk/imx/clk-pll14xx.c >> @@ -65,10 +65,17 @@ struct imx_pll14xx_clk imx_1443x_pll = { >> .type = PLL_1443X, >> .rate_table = imx_pll1443x_tbl, >> .rate_count = ARRAY_SIZE(imx_pll1443x_tbl), }; >> >> +struct imx_pll14xx_clk imx_1443x_dram_pll = { >> + .type = PLL_1443X, >> + .rate_table = imx_pll1443x_tbl, >> + .rate_count = ARRAY_SIZE(imx_pll1443x_tbl), >> + .flags = CLK_GET_RATE_NOCACHE, >> +}; >> + >> struct imx_pll14xx_clk imx_1416x_pll = { >> .type = PLL_1416X, >> .rate_table = imx_pll1416x_tbl, >> .rate_count = ARRAY_SIZE(imx_pll1416x_tbl), }; diff --git >> a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index >> bc5bb6ac8636..81122c9ab842 100644 >> --- a/drivers/clk/imx/clk.h >> +++ b/drivers/clk/imx/clk.h >> @@ -50,10 +50,11 @@ struct imx_pll14xx_clk { >> int flags; >> }; >> >> extern struct imx_pll14xx_clk imx_1416x_pll; extern struct >> imx_pll14xx_clk imx_1443x_pll; >> +extern struct imx_pll14xx_clk imx_1443x_dram_pll; >> >> #define imx_clk_cpu(name, parent_name, div, mux, pll, step) \ >> imx_clk_hw_cpu(name, parent_name, div, mux, pll, step)->clk >> >> #define clk_register_gate2(dev, name, parent_name, flags, reg, bit_idx, \ >> -- >> 2.17.1 > >
diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c index e2bc3c90d93c..9246e89bb5fd 100644 --- a/drivers/clk/imx/clk-imx8mm.c +++ b/drivers/clk/imx/clk-imx8mm.c @@ -326,11 +326,11 @@ static int imx8mm_clocks_probe(struct platform_device *pdev) clks[IMX8MM_SYS_PLL3_REF_SEL] = imx_clk_mux("sys_pll3_ref_sel", base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); clks[IMX8MM_AUDIO_PLL1] = imx_clk_pll14xx("audio_pll1", "audio_pll1_ref_sel", base, &imx_1443x_pll); clks[IMX8MM_AUDIO_PLL2] = imx_clk_pll14xx("audio_pll2", "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll); clks[IMX8MM_VIDEO_PLL1] = imx_clk_pll14xx("video_pll1", "video_pll1_ref_sel", base + 0x28, &imx_1443x_pll); - clks[IMX8MM_DRAM_PLL] = imx_clk_pll14xx("dram_pll", "dram_pll_ref_sel", base + 0x50, &imx_1443x_pll); + clks[IMX8MM_DRAM_PLL] = imx_clk_pll14xx("dram_pll", "dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll); clks[IMX8MM_GPU_PLL] = imx_clk_pll14xx("gpu_pll", "gpu_pll_ref_sel", base + 0x64, &imx_1416x_pll); clks[IMX8MM_VPU_PLL] = imx_clk_pll14xx("vpu_pll", "vpu_pll_ref_sel", base + 0x74, &imx_1416x_pll); clks[IMX8MM_ARM_PLL] = imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", base + 0x84, &imx_1416x_pll); clks[IMX8MM_SYS_PLL1] = imx_clk_fixed("sys_pll1", 800000000); clks[IMX8MM_SYS_PLL2] = imx_clk_fixed("sys_pll2", 1000000000); diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c index de905e278b80..4749beab9fc8 100644 --- a/drivers/clk/imx/clk-imx8mn.c +++ b/drivers/clk/imx/clk-imx8mn.c @@ -323,11 +323,11 @@ static int imx8mn_clocks_probe(struct platform_device *pdev) clks[IMX8MN_SYS_PLL3_REF_SEL] = imx_clk_mux("sys_pll3_ref_sel", base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels)); clks[IMX8MN_AUDIO_PLL1] = imx_clk_pll14xx("audio_pll1", "audio_pll1_ref_sel", base, &imx_1443x_pll); clks[IMX8MN_AUDIO_PLL2] = imx_clk_pll14xx("audio_pll2", "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll); clks[IMX8MN_VIDEO_PLL1] = imx_clk_pll14xx("video_pll1", "video_pll1_ref_sel", base + 0x28, &imx_1443x_pll); - clks[IMX8MN_DRAM_PLL] = imx_clk_pll14xx("dram_pll", "dram_pll_ref_sel", base + 0x50, &imx_1443x_pll); + clks[IMX8MN_DRAM_PLL] = imx_clk_pll14xx("dram_pll", "dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll); clks[IMX8MN_GPU_PLL] = imx_clk_pll14xx("gpu_pll", "gpu_pll_ref_sel", base + 0x64, &imx_1416x_pll); clks[IMX8MN_VPU_PLL] = imx_clk_pll14xx("vpu_pll", "vpu_pll_ref_sel", base + 0x74, &imx_1416x_pll); clks[IMX8MN_ARM_PLL] = imx_clk_pll14xx("arm_pll", "arm_pll_ref_sel", base + 0x84, &imx_1416x_pll); clks[IMX8MN_SYS_PLL1] = imx_clk_fixed("sys_pll1", 800000000); clks[IMX8MN_SYS_PLL2] = imx_clk_fixed("sys_pll2", 1000000000); diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c index 5c458199060a..a6d31a7262ef 100644 --- a/drivers/clk/imx/clk-pll14xx.c +++ b/drivers/clk/imx/clk-pll14xx.c @@ -65,10 +65,17 @@ struct imx_pll14xx_clk imx_1443x_pll = { .type = PLL_1443X, .rate_table = imx_pll1443x_tbl, .rate_count = ARRAY_SIZE(imx_pll1443x_tbl), }; +struct imx_pll14xx_clk imx_1443x_dram_pll = { + .type = PLL_1443X, + .rate_table = imx_pll1443x_tbl, + .rate_count = ARRAY_SIZE(imx_pll1443x_tbl), + .flags = CLK_GET_RATE_NOCACHE, +}; + struct imx_pll14xx_clk imx_1416x_pll = { .type = PLL_1416X, .rate_table = imx_pll1416x_tbl, .rate_count = ARRAY_SIZE(imx_pll1416x_tbl), }; diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index bc5bb6ac8636..81122c9ab842 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -50,10 +50,11 @@ struct imx_pll14xx_clk { int flags; }; extern struct imx_pll14xx_clk imx_1416x_pll; extern struct imx_pll14xx_clk imx_1443x_pll; +extern struct imx_pll14xx_clk imx_1443x_dram_pll; #define imx_clk_cpu(name, parent_name, div, mux, pll, step) \ imx_clk_hw_cpu(name, parent_name, div, mux, pll, step)->clk #define clk_register_gate2(dev, name, parent_name, flags, reg, bit_idx, \