[PATCH Broadcom/stblinux 2/2] soc: bcm: bcm-pmb: add BCM63138 SATA support
From: Rafał Miłecki <zajec5@gmail.com>
Date: 2021-01-14 17:55:12
Also in:
lkml
Subsystem:
broadcom pmb (power management bus) driver, open firmware and flattened device tree bindings, the rest · Maintainers:
Rafał Miłecki, Florian Fainelli, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Rafał Miłecki <rafal@milecki.pl> BCM63138 has SATA controller that needs to be powered up using PMB. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> --- Florian: this is based on your patches ARM: dts: BCM63xx: enable SATA PHY and AHCI controller reset: bcm63xx: Add Broadcom BCM63138 reset controller driver I didn't test it as I don't own any bcm63xx devices. --- drivers/soc/bcm/bcm63xx/bcm-pmb.c | 30 ++++++++++++++++++++++++++++++ include/dt-bindings/soc/bcm-pmb.h | 1 + 2 files changed, 31 insertions(+)
diff --git a/drivers/soc/bcm/bcm63xx/bcm-pmb.c b/drivers/soc/bcm/bcm63xx/bcm-pmb.c
index c223023dc64f..774465c119be 100644
--- a/drivers/soc/bcm/bcm63xx/bcm-pmb.c
+++ b/drivers/soc/bcm/bcm63xx/bcm-pmb.c@@ -209,6 +209,28 @@ static int bcm_pmb_power_on_device(struct bcm_pmb *pmb, int bus, u8 device) return err; } +static int bcm_pmb_power_on_sata(struct bcm_pmb *pmb, int bus, u8 device) +{ + int err; + + err = bcm_pmb_power_on_zone(pmb, bus, device, 0); + if (err) + return err; + + /* Does not apply to the BCM963158 */ + err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_MISC_CONTROL, 0); + if (err) + return err; + + err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_SR_CONTROL, 0xffffffff); + if (err) + return err; + + err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_SR_CONTROL, 0); + + return err; +} + static int bcm_pmb_power_on(struct generic_pm_domain *genpd) { struct bcm_pmb_pm_domain *pd = container_of(genpd, struct bcm_pmb_pm_domain, genpd);
@@ -222,6 +244,8 @@ static int bcm_pmb_power_on(struct generic_pm_domain *genpd) return bcm_pmb_power_on_zone(pmb, data->bus, data->device, 0); case BCM_PMB_HOST_USB: return bcm_pmb_power_on_device(pmb, data->bus, data->device); + case BCM_PMB_SATA: + return bcm_pmb_power_on_sata(pmb, data->bus, data->device); default: dev_err(pmb->dev, "unsupported device id: %d\n", data->id); return -EINVAL;
@@ -317,8 +341,14 @@ static const struct bcm_pmb_pd_data bcm_pmb_bcm4908_data[] = { { }, }; +static const struct bcm_pmb_pd_data bcm_pmb_bcm63138_data[] = { + { .name = "sata", .id = BCM_PMB_SATA, .bus = 0, .device = 3, }, + { }, +}; + static const struct of_device_id bcm_pmb_of_match[] = { { .compatible = "brcm,bcm4908-pmb", .data = &bcm_pmb_bcm4908_data, }, + { .compatible = "brcm,bcm63138-pmb", .data = &bcm_pmb_bcm63138_data, }, { }, };
diff --git a/include/dt-bindings/soc/bcm-pmb.h b/include/dt-bindings/soc/bcm-pmb.h
index 744dc3af4d41..385884468007 100644
--- a/include/dt-bindings/soc/bcm-pmb.h
+++ b/include/dt-bindings/soc/bcm-pmb.h@@ -7,5 +7,6 @@ #define BCM_PMB_PCIE1 0x02 #define BCM_PMB_PCIE2 0x03 #define BCM_PMB_HOST_USB 0x04 +#define BCM_PMB_SATA 0x05 #endif
--
2.26.2