From e58cd453d58b20c6a6f34d3591640aa19aa14d25 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Fri, 4 Feb 2022 15:57:50 +0200 Subject: at91: add kernel support for sama7g5 soc Add kernel support for SAMA7G5 by back-porting mainline kernel patches. Among SAMA7G5 features could be remembered: - ARM Cortex-A7 - double data rate multi-port dynamic RAM controller supporting DDR2, DDR3, DDR3L, LPDDR2, LPDDR3 up to 533MHz - peripherals for audio, video processing - 1 gigabit + 1 megabit Ethernet controllers - 6 CAN controllers - trust zone support - DVFS for CPU - criptography IPs Signed-off-by: Claudiu Beznea --- ...RM-at91-pm-add-sama7g5-ddr-phy-controller.patch | 99 ++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 target/linux/at91/patches-5.10/213-ARM-at91-pm-add-sama7g5-ddr-phy-controller.patch (limited to 'target/linux/at91/patches-5.10/213-ARM-at91-pm-add-sama7g5-ddr-phy-controller.patch') diff --git a/target/linux/at91/patches-5.10/213-ARM-at91-pm-add-sama7g5-ddr-phy-controller.patch b/target/linux/at91/patches-5.10/213-ARM-at91-pm-add-sama7g5-ddr-phy-controller.patch new file mode 100644 index 0000000000..c01c952620 --- /dev/null +++ b/target/linux/at91/patches-5.10/213-ARM-at91-pm-add-sama7g5-ddr-phy-controller.patch @@ -0,0 +1,99 @@ +From bbbbf16c44f34a2d563fa7d71de64ffe3b4b82dc Mon Sep 17 00:00:00 2001 +From: Claudiu Beznea +Date: Thu, 15 Apr 2021 13:50:04 +0300 +Subject: [PATCH 213/247] ARM: at91: pm: add sama7g5 ddr phy controller + +SAMA7G5 self-refresh procedure accesses also the DDR PHY registers. +Adapt the code so that the at91_dt_ramc() to look also for DDR PHYs, +in case it is mandatory. + +Signed-off-by: Claudiu Beznea +Signed-off-by: Nicolas Ferre +Link: https://lore.kernel.org/r/20210415105010.569620-19-claudiu.beznea@microchip.com +--- + arch/arm/mach-at91/pm.c | 27 +++++++++++++++++++++------ + 1 file changed, 21 insertions(+), 6 deletions(-) + +diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c +index 622d68724c3f..b047a1f2ddfb 100644 +--- a/arch/arm/mach-at91/pm.c ++++ b/arch/arm/mach-at91/pm.c +@@ -552,7 +552,12 @@ static const struct of_device_id ramc_ids[] __initconst = { + { /*sentinel*/ } + }; + +-static __init int at91_dt_ramc(void) ++static const struct of_device_id ramc_phy_ids[] __initconst = { ++ { .compatible = "microchip,sama7g5-ddr3phy", }, ++ { /* Sentinel. */ }, ++}; ++ ++static __init void at91_dt_ramc(bool phy_mandatory) + { + struct device_node *np; + const struct of_device_id *of_id; +@@ -585,6 +590,16 @@ static __init int at91_dt_ramc(void) + goto unmap_ramc; + } + ++ /* Lookup for DDR PHY node, if any. */ ++ for_each_matching_node_and_match(np, ramc_phy_ids, &of_id) { ++ soc_pm.data.ramc_phy = of_iomap(np, 0); ++ if (!soc_pm.data.ramc_phy) ++ panic(pr_fmt("unable to map ramc phy cpu registers\n")); ++ } ++ ++ if (phy_mandatory && !soc_pm.data.ramc_phy) ++ panic(pr_fmt("DDR PHY is mandatory!\n")); ++ + if (!standby) { + pr_warn("ramc no standby function available\n"); + return 0; +@@ -953,7 +968,7 @@ void __init at91rm9200_pm_init(void) + soc_pm.data.standby_mode = AT91_PM_STANDBY; + soc_pm.data.suspend_mode = AT91_PM_ULP0; + +- ret = at91_dt_ramc(); ++ ret = at91_dt_ramc(false); + if (ret) + return; + +@@ -980,7 +995,7 @@ void __init sam9x60_pm_init(void) + + at91_pm_modes_validate(modes, ARRAY_SIZE(modes)); + at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps)); +- ret = at91_dt_ramc(); ++ ret = at91_dt_ramc(false); + if (ret) + return; + +@@ -1005,7 +1020,7 @@ void __init at91sam9_pm_init(void) + soc_pm.data.standby_mode = AT91_PM_STANDBY; + soc_pm.data.suspend_mode = AT91_PM_ULP0; + +- ret = at91_dt_ramc(); ++ ret = at91_dt_ramc(false); + if (ret) + return; + +@@ -1023,7 +1038,7 @@ void __init sama5_pm_init(void) + return; + + at91_pm_modes_validate(modes, ARRAY_SIZE(modes)); +- ret = at91_dt_ramc(); ++ ret = at91_dt_ramc(false); + if (ret) + return; + +@@ -1048,7 +1063,7 @@ void __init sama5d2_pm_init(void) + + at91_pm_modes_validate(modes, ARRAY_SIZE(modes)); + at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps)); +- ret = at91_dt_ramc(); ++ ret = at91_dt_ramc(false); + if (ret) + return; + +-- +2.32.0 + -- cgit v1.2.3