linux-kernel - [PATCH RFC v1 4/4] soc: amlogic: meson-ee-pwrc: add support for the Meson GX SoCs

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Date:   Tue, 14 Apr 2020 22:14:57 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     robh+dt@...nel.org, khilman@...libre.com, narmstrong@...libre.com,
        linux-amlogic@...ts.infradead.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH RFC v1 4/4] soc: amlogic: meson-ee-pwrc: add support for the Meson GX SoCs

Add support for the Meson GX SoCs to the meson-ee-pwrc driver.

The power domains on the GX SoCs are very similar to G12A. The only
known differences so far are:
- The GX SoCs do not have the HHI_VPU_MEM_PD_REG2 register (for the
  VPU power-domain)
- The GX SoCs have an additional reset line called "dvin"

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 drivers/soc/amlogic/meson-ee-pwrc.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/amlogic/meson-ee-pwrc.c b/drivers/soc/amlogic/meson-ee-pwrc.c
index b30868da456a..c8fbdc8f5c1d 100644
--- a/drivers/soc/amlogic/meson-ee-pwrc.c
+++ b/drivers/soc/amlogic/meson-ee-pwrc.c
@@ -16,6 +16,7 @@
 #include <linux/clk.h>
 #include <dt-bindings/power/meson8-power.h>
 #include <dt-bindings/power/meson-g12a-power.h>
+#include <dt-bindings/power/meson-gxbb-power.h>
 #include <dt-bindings/power/meson-sm1-power.h>
 
 /* AO Offsets */
@@ -73,7 +74,7 @@ struct meson_ee_pwrc_domain_data {
 
 /* TOP Power Domains */
 
-static struct meson_ee_pwrc_top_domain g12a_pwrc_vpu = {
+static struct meson_ee_pwrc_top_domain gxbb_pwrc_vpu = {
 	.sleep_reg = AO_RTI_GEN_PWR_SLEEP0,
 	.sleep_mask = BIT(8),
 	.iso_reg = AO_RTI_GEN_PWR_SLEEP0,
@@ -138,6 +139,12 @@ static struct meson_ee_pwrc_mem_domain g12a_pwrc_mem_vpu[] = {
 	VPU_HHI_MEMPD(HHI_MEM_PD_REG0),
 };
 
+static struct meson_ee_pwrc_mem_domain gxbb_pwrc_mem_vpu[] = {
+	VPU_MEMPD(HHI_VPU_MEM_PD_REG0),
+	VPU_MEMPD(HHI_VPU_MEM_PD_REG1),
+	VPU_HHI_MEMPD(HHI_MEM_PD_REG0),
+};
+
 static struct meson_ee_pwrc_mem_domain meson8_pwrc_mem_eth[] = {
 	{ HHI_MEM_PD_REG0, GENMASK(3, 2) },
 };
@@ -223,11 +230,17 @@ static struct meson_ee_pwrc_mem_domain sm1_pwrc_mem_audio[] = {
 static bool pwrc_ee_get_power(struct meson_ee_pwrc_domain *pwrc_domain);
 
 static struct meson_ee_pwrc_domain_desc g12a_pwrc_domains[] = {
-	[PWRC_G12A_VPU_ID]  = VPU_PD("VPU", &g12a_pwrc_vpu, g12a_pwrc_mem_vpu,
+	[PWRC_G12A_VPU_ID]  = VPU_PD("VPU", &gxbb_pwrc_vpu, g12a_pwrc_mem_vpu,
 				     pwrc_ee_get_power, 11, 2),
 	[PWRC_G12A_ETH_ID] = MEM_PD("ETH", meson8_pwrc_mem_eth),
 };
 
+static struct meson_ee_pwrc_domain_desc gxbb_pwrc_domains[] = {
+	[PWRC_GXBB_VPU_ID]  = VPU_PD("VPU", &gxbb_pwrc_vpu, gxbb_pwrc_mem_vpu,
+				     pwrc_ee_get_power, 12, 2),
+	[PWRC_GXBB_ETH_ID] = MEM_PD("ETH", meson8_pwrc_mem_eth),
+};
+
 static struct meson_ee_pwrc_domain_desc meson8_pwrc_domains[] = {
 	[PWRC_MESON8_VPU_ID]  = VPU_PD("VPU", &meson8_pwrc_vpu,
 				       meson8_pwrc_mem_vpu, pwrc_ee_get_power,
@@ -514,6 +527,11 @@ static struct meson_ee_pwrc_domain_data meson_ee_g12a_pwrc_data = {
 	.domains = g12a_pwrc_domains,
 };
 
+static struct meson_ee_pwrc_domain_data meson_ee_gxbb_pwrc_data = {
+	.count = ARRAY_SIZE(gxbb_pwrc_domains),
+	.domains = gxbb_pwrc_domains,
+};
+
 static struct meson_ee_pwrc_domain_data meson_ee_m8_pwrc_data = {
 	.count = ARRAY_SIZE(meson8_pwrc_domains),
 	.domains = meson8_pwrc_domains,
@@ -542,6 +560,10 @@ static const struct of_device_id meson_ee_pwrc_match_table[] = {
 		.compatible = "amlogic,meson8m2-pwrc",
 		.data = &meson_ee_m8b_pwrc_data,
 	},
+	{
+		.compatible = "amlogic,meson-gxbb-pwrc",
+		.data = &meson_ee_gxbb_pwrc_data,
+	},
 	{
 		.compatible = "amlogic,meson-g12a-pwrc",
 		.data = &meson_ee_g12a_pwrc_data,
-- 
2.26.0